The mathematical relation between two trigonometric functions in product form is called the product identity of the trigonometric functions.

In trigonometry, six functions are defined on the basis of the ratio of any two sides of a right angled triangle but three pairs of trigonometric functions have a relation in product form and they are called the product identities of trigonometric functions.

For example, if theta is an angle of a right angled triangle, here is the list of the possible product identities of the trigonometric functions.

01

$\large \sin{\theta} \csc{\theta} = 1$

01

$\large \cos{\theta} \sec{\theta} = 1$

03

$\large \tan{\theta} \cot{\theta} = 1$

List of most recently solved mathematics problems.

Jul 04, 2018

Limit (Calculus)

Evaluate $\displaystyle \large \lim_{x \,\to\, \tan^{-1}{3}} \normalsize {\dfrac{\tan^2{x}-2\tan{x}-3}{\tan^2{x}-4\tan{x}+3}}$

Jun 23, 2018

Limit (Calculus)

Evaluate $\displaystyle \large \lim_{x \to 0} \normalsize \dfrac{e^{x^2}-\cos{x}}{x^2}$

Jun 22, 2018

Integral Calculus

Evaluate $\displaystyle \int \dfrac{1+\cos{4x}}{\cot{x}-\tan{x}} dx$

Jun 21, 2018

Limit

Evaluate $\displaystyle \large \lim_{x \to \infty} \normalsize {\sqrt{x^2+x+1}-\sqrt{x^2+1}}$

Math Doubts is a best place to learn mathematics and from basics to advanced scientific level for students, teachers and researchers.
Know more

Learn how to solve easy to difficult mathematics problems of all topics in various methods with step by step process and also maths questions for practising.