Question

$sin^{2} 60° + cos^{2}(3x-9°)=1$
then x=?

Answer 1

sin^2Φ+cos^2Φ=1

therefore Φ will be same i.e.60°

therefore

(3x-9°)=60°

3x=69

x=23°

MARK

BRAINLIEST

FOLLOW

Answer 2

3x -9=60

3x =69

x =23