Question

Evaluate the following cos 30 degree into Cos 60 degree + sin 30 degree into sin 60 degree

Answer 1

Answer:

root3+root3 upon 4

Step-by-step explanation:

value of,

cos30°=√3/2

cos60°=1/2

sin30°=1/2

sin60°=√3/2

therefore

cos30°*cos60°+sin30°*sin60°

√3/2*1/2+1/2*√3/2

√3/4+√3/4

√3+√3/4

Answer 2

Answer:

3/2

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