Question

clear doubt sin square + cos square ​

Answer 1

Answer:

you have done two mistakes.

1.) sin30=1/2.

2.) cos 30=root3/2.

you have to make two figures then Try..

hope it is helpful.

Answer 2

$hi \: friend \: ....$

You have mistaken ..

my dear friend ..

$\sin(30) = \frac{1}{2 } \: \: \: \: \: \cos(30) = \frac{ \sqrt{3} }{2}$

Solving it ...

${sin}^{2} 30 + {cos}^{2} 30$

$= ( { \frac{1}{2} })^{2} + ( { \frac{ \sqrt{3} }{2} })^{2}$

$= \frac{1}{4} + \frac{3}{4}$

$= \frac{3 + 1}{4}$

$= \frac{4}{4}$

$= 1$

hence verified ...

hope this helps you !!!