Question

If cos A + sin A = √2 cos A, then cos A – sin A =
(1) 2 sin A (2) √2 sin A (3) 2 cos A (4) √2 cos A

WHICH ONE IS CORRECT AND HOW

Answer 1

Answer:

your answer is 2sinA

l hope you like this

Answer 2

Answer:

your correct answer is(2)√2sinA