Question

answer trignometry chapter​

Answer 1

Answer:

Step-by-step explanation:

R.H.S

1-2SIN²x COS²......................2

NOW

SIN² + COS² = 1

NOW SQUARE ON BOTH SIDE

(SIN² +COS²)² =1..........................1

NOW SUB 1 IN 2

(SIN² + COS²)² - 2 SIN² x COS²

(SIN² + COS² + 2 SIN x COS) ² - 2SIN²x COS²

SIN⁴ + COS⁴ + 2SIN² x COS² - 2 SIN² x COS²

= SIN⁴ + COS⁴

HENCE L.H.S = R.H.S