Question

Prove that :
4(sin⁴30° + cos⁴60°)
-3 (cos²45° - sin²90°) = 4.
(ICSE)​

Answer 1

Answer:

Prove that :

4(sin⁴30° + cos⁴60°)

-3 (cos²45° - sin²90°) = 4.

(ICSE)