what is the value of cos 30×cos 60+sin 60×sin 30.
Answers
Answered by
0
Answer:
0.1874
Step-by-step explanation:
cos 30= 0.8660
cos 60= 0.5
sin 60= 0.8660
sin 30= 0.5
0.8860×0.5+0.8660×0.5= 0.1874
Answered by
0
Answer:
root 3
2
Step-by-step explanation:
cos 30 × cos 60 + sin 60 × sin 30
= root 3 × 1 + root 3 × 1
2 2 2 2
= root 3 + root 3
4 4
= 2( root 3 )
4
= root 3
2
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