Question

x = cos 550, y = cos 65°, z = cos 175°
= xy + y2 + zx =
1.-3/4 2. 3/4
3. 3/2 4. 1/2
​

Answer 1

Answer:

Hiii..answer is in the attachment below....

Give thanks!!!!!!!!

Follow me!!!!

Mark as brailiest!!!!!

Thanks!!!