Using the appropriate right triangle, find the exact value of the trigonometric expression.csc 45°
A. 
B. 1
C. 
D. 
Answer: A
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Solve the equation 
. Round your answer to two decimal places.
?
A. There is no solution.
B. ?
C. ?
D. 
Find all solutions of the equation in the interval [0, 2?).2 sin2 ? - 3 sin ? - 2 = 0
A. 
B. 
C. 
D. 
Find the exact value by using a sum or difference identity.sin (195° - 75°)
A. - 
B. - 
C. - 
D. 
Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = -x2 - 8x
A. vertex: (-4, 16)
axis of symmetry: x = -4
x-intercepts: 0 and -8; y-intercept: 0
domain: (-?, ?); range: (-?, 16]
B. vertex: (4, -16)
axis of symmetry: x = 4
x-intercept: none; y-intercept: -32
domain: (-?, ?); range: (-?, -16]
C. vertex: (-4, -16)
axis of symmetry: x = -4
x-intercept: none; y-intercept: -32
domain: (-?, ?); range: (-?, -16]
D. vertex: (4, 16)
axis of symmetry: x = 4
x-intercepts: 0 and 8; y-intercept: 0
domain: (-?, ?); range: (-?, 16]