Solve the equation.
= 2x
A. {3}
B. {-3}
C. ?
D. {1}
Answer: A
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Decide whether or not the given equation is an identity.2 cos2 
csc x = csc x + tan x
A. Yes B. No
Solve the equation.x2 + 5x - 84 = 0
A. x = 12, -7 B. x = -12, 1 C. x = 12, 7 D. x = -12, 7
Determine the quadrant in which the terminal side of angle ? lies.sec ? < 0 and tan ? < 0
A. Quadrant I B. Quadrant III C. Quadrant IV D. Quadrant II
Solve the problem.The inequality |T - 35| ? 18 describes the range of monthly average temperatures T in degrees Fahrenheit at a City X. (i) Solve the inequality. (ii) If the high and low monthly average temperatures satisfy equality, interpret the inequality.
A. 14 ? T ? 56; The monthly averages are always within 
B. T ? 53; The monthly averages are always less than or equal to 
C. 17 ? T ? 53; The monthly averages are always within 
D. 14 ? T; The monthly averages are always greater than or equal to 