Find the reference angle for the given angle.-12°
A. 168°
B. 102°
C. 12°
D. 78°
Answer: C
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Determine where the function is increasing and where it is decreasing.g(x) = 2x2 + 40x + 196
A. decreasing on (-?, 10) increasing on (10, ?) B. increasing on (-?, -10) decreasing on (-10, ?) C. increasing on (-?, -20) decreasing on (-20, ?) D. decreasing on (-?, -10) increasing on (-10, ?)
Solve the problem.A rectangle has an area of 16 sq ft. If the length is 4 ft and the width is (x + 2) ft, find the value of x.
A. 2 B. -6 C. -2 D. 6
Write each expression in factored form as an algebraic expression of a single trigonometric function.4 cot 2 x - 
+ cos x sec x
A. (2 cot x - 1)2 B. (4 tan x + 1)(tan x + 1) C. 1 D. (2 tan x - 1)(2 tan x + 1)
Solve the problem.A rectangle has its center at the origin. It has two sides of length 4a which are parallel to the horizontal axis and two sides of length 2a parallel to the vertical axis. Find polar coordinates of the vertices.
A. ? (a
, 30°), (a
, 150°), (a
, 210°), (a
, 330°)
B. ? (2a
, 26.6°), (2a
, 153.4°), (2a
, 206.6°), (2a
, 333.4°)
C. ? (a
, 26.6°), (a
, 153.4°), (a
, 206.6°), (a
, 333.4°)
D. ? (2a
, 63.4°), (2a
, 116.6°), (2a
, 243.4°), (2a
, 296.6°)