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Question 1 of5 (20 points) Back \\ l Question1 Use a double-angle formula to evaluate the expression. 5_:r) _ cos ( 2 Question 2 of 5 (20 points) Use a double-angle formula to rewrite the expression. 1 1 1-tan(x) + tan(x)+1 tan2x O - tan (2x) O - tan x O tan (2x)Double-Angle and Half-Angle Formulas Question 3 of 5 (20 points) Back Question 3 V Next Given that cos 0 = - 4 V65 and a " , find the exact values of the trigonometric functions. sin 20 = csc 20 = E cos 20 = sec 20 = E tan 20 = E cot 20 =Question 4 of 5 (20 points) Que Find all exact solutions to 6 sin 2x = 12 sin x on [0, 27:). Enter the answer in terms ofa', as needed. Do not enter a decimal approximation. Instructions for entering a. x = This question accepts lists of numbers or formulas separated by semicolons. E.g. "2; 4; 6" or "x+1; xl". The order of the list doesnt matter but be sure to separate the terms with semicolons. Question 5 of 5 (20 points) | Question: Find all exact solutions to cos 2x = cos x on [0, 22:). Enter the answer in terms afar, as needed. Do not enter a decimal approximation. Instructions for entering it. x = This question accepts lists of numbers or formulas separated by semicolons. E.g. "2; 4; 6" or "x+1; x-l". The order of the list doesnt matter but be sure to separate the terms with semicolons