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Given cos u = - and sin v = > , find the exact value of cos(u + v). HINT: Determine which quadrant the angles have in common, draw triangles in that quadrant (one for each angle), label both triangles, then use the sum formula to find your answer. Exact answer as a simplified fraction: cos(u + v) = 0.977Johnny was asked to simplify the following: tan r Here is his work: Simplify: tan x 1 + sec x = 1 + secx tanx a) Johnny incorrectly cross-cancelled, as if he was multiplying two fractions. What should he have done instead? He should've got common denominators & combined the fractions. b) Now simplify it correctly. Answer: 2/tan x #Express the following radical using rational exponents: VArty' # 4x712 4x y 461792Jonah plans to deposit $15,000 into one of the following two types of accounts. Determine how much he would earn in each option (round answers to nearest cent): a) Option A: At 5.125% interest compounded monthly for 10 years, he would have $ 25,014.5 b) Option B: At 4.375% interest compounded continuously for 10 years, he would have $ 23,213.98State the period of each of the periodic graphs: a) Period = 4 A f(t) bj Period = 0 C) 6 -5 -4 3 2 10 1 2 3 4 5 6