Question

3. Given that sin 0 = a÷b then cos 0 is equal to​

Answer 1

if sin 0=a/b

then

cos 0 = 90-a/b

$....$

Answer 2

The answer is 0.

As we know that trigonometric functions irrespective of sides works basically upon angles and in this question the given angle is 0° therefore,

Cos0° = 0.