Question

Plz answer quickly ....

Answer 1

Step-by-step explanation:

Answer in the photo

Mark brainliest

Answer 2

Step-by-step explanation:

$\cos(60) \times \cos(45 ) + \sin(60) \times \sin(45)$

$\cos(60) = \frac{1}{2}$

$\cos(45) = \frac{1}{ \sqrt{2} }$

$\sin(60) = \frac{ \sqrt{3} }{2}$

$\sin(45) = \frac{1}{ \sqrt{2} }$

$\frac{1}{2} \times \frac{1}{ \sqrt{2} } + \frac{ \sqrt{3} }{2} \times \frac{1}{ \sqrt{2} }$

$\frac{1}{2 \sqrt{2} } + \frac{ \sqrt{3} }{2 \sqrt{2} }$

$\frac{1 + \sqrt{3} }{2 \sqrt{2} }$