Please i want answers about this questions?

Evaluate cos2θ for cosθ = square root of 3/2

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Revirite the formula to determine the area covered by one can of paint. alyssa and her father are going to paint the house this summer. they know they'll need 6 cans of paint. enter the correct answer. 000 done a formula that describes this scenario is (licierali 000 oo 6 w w = the total area of the walls p = area covered by a can of paint