What is the exact value of the trigonometric expression in simplest form? 2 cos(3π/4)−4 sin(7π/6)

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°

Find the quotient 9(cos135+isin135)/7(cos10+isin10)

Match each three-dimensional figure to its volume based on the given dimensions. (assume π = 3.14.) a right cylinder with radius 4 cm and height 3 cm 314 cu cm a cone with radius 5 cm and height 12 cm 160 cu cm a pyramid with base area 16 sq cm and height 30 cm 48 cu cm a pyramid with a square base of length 3 cm and height 16 cm 150.72 cu cm