Math, asked by devaleshivam, 5 months ago

cos30° x cos60° + sin30° x sin60°​

Answers

Answered by SnehalRBaral
6

ur answer is √3/2

= cos30° x cos60° + sin30° x sin60°

= [ (3/2) x (½) ] + [ (½) x (3/2) ]

= 3/4 + √3/4

= 2 x √3/4

= √3/2

hope it will help u ❣️

please mark me as brainliest。◕‿◕。

Answered by prithathakur92
0

Answer:

cos30°= √3/2

cos60°=1/2

sin30°= 1/2

sin60°=√3/2

Step-by-step explanation:

cos30°×cos60°+sin30°×sin60°

=√3/2×1/2+1/2×√3/2

=√3/4+√3/4

=2√3/4

=√3/2

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