Question

prove that -
4(sin^4 30°+cos^4 60°) -
3(cos^2 45°- sin^2 90°) = 2

Answer 1

This is the required proof

Answer 2

HELLO DEAR,


4(SIN⁴30 + COS⁴60) - 3(COS²45 - SIN²90)

=> 4[(1/2)⁴ + (1/2)⁴] - 3] - 3[(1/√2)² - (1)² ]

=> 4[1/16 + 1/16] - 3(1/2 - 1)

=> 4× 2/16 - 3× (-1/2)

=> 1/2 + 3/2

=> 4/2 = 2



I HOPE ITS HELP YOU DEAR,
THANKS