Question

cos 60° x cos 30° + sin 60° x sine 30°​

Answer 1

cos 60° x cos 30° + sin 60° x sin 30°[As cosA.cosB+sinA.sinB=cos(A-B)]

=cos(60⁰-30⁰)

=cos30⁰

=√3/2

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Answer 2

Answer:

cos 60° x cos 30° + sin 60° x sine 30°=√3/2