Please answer this correctly please label the numbers correctly and please write the answers correctly

If value of cos330° is √3/2 then find tan165°.

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Th perimeter of a rectangular garden is 150 feet. the length is 50 feet longer than the width, w. which equation could be used to calculate the width of the garden? a.) 2w+ 2(w-50) =150 b.) 2w+50 + 2w =150 c.) 2(w+50) + w =150 d.) 2w+ 2(w + 50) = 150 need asap. will give brainliest !