3 sin ^2 45°+ 2 cos ^2 60°
plz tell fast
Answers
Answered by
1
Answer:
Step-by-step explanation:
=3 sin90 + 2 cos 120
=3*1 + 2 cos(90+30)
=3+2*-sin30
=3+2×(-1/2)
=3-1
=2
Similar questions