Question

Evaluate: sin 60'. Cos 30° - Cos 60° Sin 30°​

Answer 1

Answer:

sin(60°-30°)

sin30°=1/2

Step-by-step explanation:

sin(A-B)=sinA cosB - cosAsinB

Answer 2

sin60°.cos30°-cos60°.sin30°

=sin60°.sin(90°-30°)-sin(90°-60°).sin30°

=sin60°.sin60°-sin30°.sin30°

=sin^2(60°)-sin^2(30°)

=(√3/2)^2-(1/2)^2

=3/4-1/4

=(3-1)/4

=2/4

=1/2 ans...

Hope it helps you... thanks