Find cos(A+B), given sinA=35 and cosB=−12/13 and both A and B are in π2<θ<π

How many grams are in 8 kilograms? if 100 grams = 1 kilogram

Volume of a cylinder with a radius of 13 in and height of 30 in

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?