Answering questions 21-37

Graph the function. Show at least one period. Find the amplitude, period, phase and vetical shifts. 21) y = 4 sin(3x - 7t) + 1 21) -+ Amp Period Phase shift = Vertical shift = Find the inverse function f-1 of the function f. 22) f(x) = - sin(x + 9) - 6 22) A) f-1(x) = -sin-1(x + 9) - 6 B) f-1(x) = sin-1(x +6) - 9 C) f-1(x) - -sin-1(x + 6) - 9 D) F-1(x) - -sin-1(x - 6) + 9 Find the exact value of the expression. 23) cot cos- 1 - 36 23) Graph the function for at least one period. Show all key features like the examples in class. 24) y = -2 tan x - 24) 25) y = sec x - 25) Write the trigonometric expression as an algebraic expression in u. 26) sin (tan-1 u) 26) A) Uvu2 - 1 B) Vuz + 1 U2 + 1 C) uvu2 + 1 D) UVU2 + 1 U2 - 1 U2 + 1 Find the exact value of the expression. 27) sec- (-2) 27) A) - B) - 21 C) D) Use a calculator to find the value of the expression in radian measure rounded to two decimal places. 28) csc" (- 7) 28) A) 1.71 B) 98.21 C) -8.21 D) -0.14 Solve the equation on the interval 0 s0