Question

Find; cos 60° Cos 30° - sih 60° Sih 30°​

Answer 1

Answer:

the answer will be zero.

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Answer 2

Step-by-step explanation:

$cos60 = \frac{1}{2} \: \: \: \: \: cos30 = \frac{ \sqrt{3} }{2} \: \: \: \: \: sin60 = \frac{ \sqrt{3} }{2} \: \: \: \: \: sin30 = \frac{1}{2} \\ = ( \frac{1}{2} \times \frac{ \sqrt{3} }{2} ) - ( \frac{ \sqrt{3} }{2} \times \frac{1}{2}) \\ = \frac{ \sqrt{3} }{4} - \frac{ \sqrt{3} }{4} \\ = 0$