Question

find the value of Cos 30° ×Cos 45° - sin3o°×sin 45°​

Answer 1

Answer:

$cos30 \times \cos45 \: - \sin30 \times \sin45 \\ = \frac{ \sqrt{3} }{2} \times \frac{1}{ \sqrt2} - \frac{1}{2} \times \frac{1}{ \sqrt{2} } \\ = \frac{ \sqrt{3} }{2} - \frac{1}{2} \\ = \frac{ \sqrt{3}- 1}{2}$

Mark it as Brainliest answer