examples, and problems from the community.

including olympiad champions, researchers, and professionals.

examples, and problems from the community.

including olympiad champions, researchers, and professionals.

Sign up to access problem solutions.

These are your basic building blocks for solving trigonometric equations and understanding how the pieces fit together. Using these identities can make sense of even the scariest looking trig.

Find the value of

\[\cos^2 45^{\circ} +\sin^2 45^{\circ}.\]

examples, and problems from the community.

including olympiad champions, researchers, and professionals.

Sign up to access problem solutions.

by
**
kritarth lohomi**

Simplify \( \tan\left(A + \frac{\pi}{2}\right).\)

examples, and problems from the community.

including olympiad champions, researchers, and professionals.

Sign up to access problem solutions.

by
**
Jester De Vera**

If \(\sin A +\sin^{2}A=1,\) find the value of \(\cos ^{2} A + \cos ^{4} A.\)

examples, and problems from the community.

including olympiad champions, researchers, and professionals.

Sign up to access problem solutions.

by
**
Krishna Ar**

\[\ln(\tan1^{\circ})+ \ln(\tan2^{\circ})+\ldots+\ln(\tan88^{\circ})+\ln(\tan89^{\circ})= \ ?\]

examples, and problems from the community.

including olympiad champions, researchers, and professionals.

Sign up to access problem solutions.

by
**
mario font**

What is the value of \( \sin 20^{\circ}(\tan 10^{\circ}+\cot 10^{\circ})\)?

examples, and problems from the community.

including olympiad champions, researchers, and professionals.

Sign up to access problem solutions.

by
**
Danish Ahmed**

© Brilliant 2017

×

Problem Loading...

Note Loading...

Set Loading...