KnowledgeBoat Logo
|

Mathematics

In △ABC, angle C is 90° then find the value of sin (A + B).

Trigonometric Identities

11 Likes

Answer

In △ ABC,

∠ A + ∠ B + ∠ C = 180°

⇒ ∠ A + ∠ B + 90° = 180°

⇒ ∠ A + ∠ B = 180° - 90°

⇒ ∠ A + ∠ B = 90°

⇒ sin(A + B) = sin 90°

⇒ sin(A + B) = 1

Hence, sin (A + B) = 1.

Answered By

4 Likes


Related Questions