cos30.cos60 -sin30.sin60
Answers
Answered by
1
cos 30 .cos(90-30) - sin 30. sin(90-30)
cos 30. sin 30- sin 30. cos 30
= 0
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Answered by
0
Step-by-step explanation:
cos 30° = √3/2
cos 60° = 1/2
sin 30° = 1/2
sin60° = √3/2
putting the value s we get,
√3/2 × 1/2 - 1/2 × √3/2
= 0 ans.
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