Question

If the angle C is more than 90° , can we apply the sin(a+b) formula?

Answer 1

Step-by-step explanation:

if C is greater than 90 then it is obtuse angle

the sine of an obtuse angle is equal to the sine of its supplement. of its supplement. The supplement, 180° − θ, is the corresponding acute angle. sin θ = sin (180° − θ).

hence we can apply formula of it