2) Cos 60° x Cos 30° + Sin 60° x Sin 30°
find the value
Answers
Answered by
4
Answer:
Cos 60° ×cos30° + sin 60° ×sin 30°
= 1/2 × root 3/2 + root 3/2 × 1/2
= root 3/4 + root 3/4
= 2 root 3 /4
= root 3/2
Answered by
1
Answer:
√3/2
Step-by-step explanation:
cos60°× cos 30°+sin30°×sin60°
= 1/2×√3/2+√3/2×1/2
=√3/4+√3/4
=2√3/4
√3/2
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