A) What is the value of cos 60° as a fraction in its simplest form? b)
60°
8 cm
5 cm
b
Show that b = 7

Find the lateral surface area plzzz

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Kristen is wrapping presents for the holidays. she has a box that measures 4 ft. x 2 ft. x 2 ft. how many square feet of wrapping paper does she need to cover the box without overlapping?