Question

sinA+sin2A=X and cosA+cos2A=y the the value of (x²+y²)(x²+y²-3). ansp,​

Answer 1

Answer:

Solution :

Squaring and adding, we get <br>

<br>

….(1) <br> Also

<br> or

<br> Put value of cos A from (1) and and get the answer.