Math Doubts

Cofunction identities Problems and solutions

In trigonometry problems, the trigonometric functions are involved in trigonometric expressions and equations. In some cases, one trigonometric function should be converted into another trigonometric function for simplifying the trigonometric expressions or solving the trigonometric equations and the conversion can be done by the cofunction identities. The following is the list of problems with solutions to learn how to use the cofunction identities in trigonometry.

Evaluate $\cos^2{26^\circ}$ $+$ $\cos{64^\circ} \sin{26^\circ}$ $+$ $\dfrac{\tan{36^\circ}}{\cot{54^\circ}}$

Evaluate $\dfrac{5\sin{(17^\circ)}}{\cos{(73^\circ)}}$ $+$ $\dfrac{2\cos{(31^\circ)}}{\sin{(59^\circ)}}$ $-$ $\dfrac{7\sin{(80^\circ)}}{\cos{(10^\circ)}}$

Evaluate $3\dfrac{\sin{72^\circ}}{\cos{18^\circ}}$ $-$ $\dfrac{\sec{32^\circ}}{\csc{58^\circ}}$

Math Doubts

A best free mathematics education website that helps students, teachers and researchers.

Maths Topics

Learn each topic of the mathematics easily with understandable proofs and visual animation graphics.

Maths Problems

A math help place with list of solved problems with answers and worksheets on every concept for your practice.

Learn solutions

Subscribe us

You can get the latest updates from us by following to our official page of Math Doubts in one of your favourite social media sites.

Copyright © 2012 - 2022 Math Doubts, All Rights Reserved