P.T sin 420°. cos 390° - cos (-300°) sin (-330°) = 1/2.
Answers
Answered by
3
Answer:
Your answer
by Aarav khatana
Attachments:
Answered by
1
Answer:
Step-by-step explanation:
sin(360°+60°).cos(360°+30°)-(-cos60°.-sin30°)
=sin60°.cos30°-cos60°.sin30°
=sin(60°-30°)
=sin30°
=1/2
Hence Proved your question
Similar questions