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