Question

20. If sin A-Cos A = 0, then the value of sin A + Cos A is
(a) 2 (b) 1 (c) 34 (d) 12​

Answer 1

Answer:

options a is the answer of these question.

Answer 2

Answer:

sinA - cos A = 0

SinA = CosA

SinA/CosA = 1

TanA = 1

A = 45°

Because tan 45° = 1

it means

sin45° + Cos45° = 1/√2 + 1/√2= √2