Question

IF A = 30 (ii) (sin A - cos A)2 = 1 - sin 2 A​

Answer 1

Step-by-step explanation:

(sinA-cosA)2=1-2sinA

(2sin30⁰-2cos30⁰)2=1-2sinA

2×1/2-2×√3/2=1-2sinA

1-√3=1-2sinA

2sinA=√3

sinA=√3/2

A=60⁰ (sin60⁰=√3/2)