Tan in trigonometry is the ratio of the length of the opposite side to the length of the adjacent side in a right triangle. We see it come into play when we deal with trigonometric functions, which are fundamental in relating the angles of a triangle to the dimensions of its sides. Specifically, in a […]

# Category Archives: Trigonometry

Geometry and trigonometry are two pivotal branches of mathematics that often interlock in their study of shapes, sizes, and the properties of space. In my exploration of these subjects, I’ve come to appreciate how geometry provides a broad canvas, addressing various figures and spatial relationships, while trigonometry focuses intently on the specific properties of triangles, […]

Algebra 2 and trigonometry serve as critical stepping stones in a student’s mathematical journey through high school and into college. I remember that uncovering the intricacies of Algebra 2’s equations and inequalities laid the groundwork for my understanding of more complex math concepts, serving as an essential prerequisite for other advanced courses. Whereas algebra provides […]

To use trigonometry to find lengths, I first identify the specific functions related to the sides of a right-angled triangle: sine, cosine, and tangent. These trigonometric ratios compare the lengths of two sides of the triangle, depending on the angle in question. When I have one side of a right-angled triangle and an angle, I […]

Yes, trigonometry is indeed a part of precalculus. In my study of mathematics, I’ve found that precalculus serves as the foundation that eases students into the complexities of calculus. Within this preparatory stage, trigonometry plays an integral role, furnishing students with the skills to understand and manipulate functions that describe angles, circles, and oscillations. I […]

Trigonometry is typically introduced to students during high school, often encountered after building a foundational understanding through subjects such as algebra and geometry. In most educational systems, this means that trigonometry is usually taught in the later years of high school, often during Algebra II or Pre-Calculus, which are courses that students take in 10th, 11th, […]

To learn trigonometry effectively requires a strategic approach. I’ve found that starting with the basics, like understanding the functions of sine, cosine, and tangent, lays a strong foundation. These functions relate the angles of a triangle to the lengths of its sides, which is the bedrock of trigonometry. Making these concepts intuitive is key to […]

This article aims to take you on an immersive journey into the realm of direction cosines. We’ll unearth their definition, properties, and significant applications in various fields, revealing their profound impact on our comprehension and manipulation of multi-dimensional spaces. Definition of Direction Cosines In mathematics, particularly in vector calculus and physics, direction cosines are three […]

The function $sin^{-1}x$, also known as the inverse sine function, is an inverse form of a trigonometric function, and theoretically, we call it a sine inverse “x” function. It can also be written as arc $sin(x)$ or can be read as arc of $sin(x)$ function. This function represents the inverse of the original sin(x) function. […]

Today’s focus, the derivative of 2 to the x, is a cornerstone example that shines a light on the fundamental process of differentiation. We will illuminate the basic ideas of calculus by delving into the specifics of this situation, laying the groundwork for further mathematical investigations. Embarking on a mathematical tour through the landscape of […]

In this comprehensive exploration, we will specifically focus on arctan(0), demystifying its meaning, understanding its mathematical underpinnings, and unveiling its significance in real-world applications. Definition The arctan function, also known as the inverse tangent or tan^(-1), is used to find the angle whose tangent is a given number. In other words, it undoes what the […]

by William Smith With more than 25 years of experience teaching math, I pride myself on being knowledgeable in multiple facets of this ever-growing topic. As an educator, my aim here is to share free math tutorials and lessons to assist students with their studies. The cos 45 degrees, symbolized as cos(45°) holds a special place in the fascinating world of trigonometry, we […]

The derivative of $tan^{-1}x$ is equal to $dfrac{1}{1+x^{2}}$. Mathematically, the formula is written as $dfrac{d}{dx} tan ^{-1} x = (tan^{-1}x)^{‘} = dfrac{1}{1+x^{2}}$. We are basically differentiating the inverse function of a tangent with respect to the variable “$x$”. In this topic, we will study the derivative of the inverse of tan x and its proof […]

The double angle theorem is the result of finding what happens when the sum identities of sine, cosine, and tangent are applied to find the expressions for $sin (theta + theta)$, $cos (theta + theta)$, and $tan (theta + theta)$. The double angle theorem opens a wide range of applications involving trigonometric functions and identities. […]

The Pythagorean identities are important trigonometric identities that allow us to simplify trigonometric expressions, derive other trigonometric identities, and solve equations. Understanding these identities is essential when building a strong foundation to master trigonometric concepts and learn more advanced math topics. The Pythagorean identities are derived from the Pythagorean theorem. We use these identities to […]

Within the expansive realm of calculus, the antiderivative, including the antiderivative of tan(x), assumes a pivotal role in solving numerous mathematical problems. When we delve into the intricacies of trigonometric functions, one of the most frequently encountered functions is the tangent function or tan(x). Therefore, understanding the antiderivative of tan(x) broadens our grasp of integral […]

The law of cosines or cosine theorem is a rule that provides us with the relation between the sides and angles of a triangle. The relationship is described using the formula: $c^2 = a^2 + b^2 -2abcos (z)$ or $c = sqrt{a^2 + b^2 -2abcos (z)}$, where $a$, $b$ and $c$ are the three sides […]

How to find the measure of an angle is an essential skill in various fields, ranging from mathematics and engineering to architecture and navigation. Whether you’re a student, a professional, or simply an enthusiast eager to delve into the world of angles, this comprehensive guide will equip you with the knowledge and techniques to confidently […]

In general, trigonometry is considered hard, especially when right triangle numerals are given as word problems. However, an exact answer to this question depends upon a number of factors as some people find trigonometry hard while others think it to be relatively easy. In many cases, students don’t comprehend the problem properly, which creates all […]