Question

What is the value of(cos267-sin223)

Answer 1

answer is 0

cos

$\cos ^{2} (67) - \sin ^{2} (23)$

$\cos ^{2} (90 - 23) - sin ^{2} (23)$

$\sin ^{2} (23) - sin ^{2} (23)$

$= 0$

Answer 2

Answer:

Step-by-step explanation: