Question

Cos60° cos30°+sin60° sin30°= cos30°

Answer 1

Explanation:

$= cos {60}^{0} cos {30}^{0} + sin {60}^{0} sin {30}^{0} \\ = cos( {60}^{0} - {30}^{0} ) \\ = cos {30}^{0} \\ \\ \\ \\ \\ \\ hope \: it \: will \: help \: you..$

Answer 2

Answer:

Explanation:

You have to use values of trigonometry angles that is given in ch-8