Question

the value of the expression cos30*cos60 + sin30*sin60​

Answer 1

Answer:

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We know that

cos 60= 1/2

cos 30= √3/2

sin 60= √3/2

sin 30=1/2

Substituting all the values in the given equation we get

1/2 + √3/2 + √3/2 + 1/2

= √3/4 + √3/4

= 2√3/4

= √3/2

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Answer 2

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