Question

2sin^2A = 3(1-cosA) what is the value of A​

Answer 1

Answer:

60°

Step-by-step explanation:

2sin^2A = 3(1-cosA)

2( 1 - cos^2A) = 3(1-cosA)

2(1- cosA)(1+cosA) = 3(1-cosA)

1 + cosA = 3/2 => cosA = 1/2

cosA = cos 60° => A = 60°