# Trigonometry-Blitzer 5th Ed. Trigonometric Equations Exercise

August 30, 2017

Question
Blitzer 5th Ed.
Trigonometric Equations
Exercise 5.2, p. 545-546 (show work)
Use an identity to find the value of the expression:
27.

= 1

Express the value of the function as a single fraction:
69.

If f(∅)= 2cos∅ – cos2∅, find f() =

79.
cosθ =
Exercise 5.5, p. 589-590 (show work)
Determine the amplitude, period, and phase shift of each function.
Then graph one period of the function:
19.

y = sin(2x-π) = 1; π;

30.

y = -3 sin(2π+4π) =

Use a vertical shift to graph one period of the function:
59.

y = -3 cos2πx+2 = (

Exercise 5.7, p. 619-620 (show work)
Find the exact value of the expression, if possible:

46.

cos(3π) =

Use a right triangle to write each expression as an algebraic
expression. Assume that x is positive and that the given trigonometric
function is defined for the expression in x:
69.

cot( ) =

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