Find the exact value of the following expression without using a calculator.csc (45°)
A. 
B. 
C. 1
D. 
Answer: A
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The graph of f(x) = ax2 + bx + c is given in the figure. Determine whether the discriminant is positive, negative, or zero.
A. Positive B. Zero C. Negative
The pair of triangles is similar. Find the missing length.
A. 34 B. 28 C. 45 D. 36
A hot-air balloon is held at a constant altitude by two ropes that are anchored to the ground. One rope is 125 feet long and makes an angle of 63° with the ground. The other rope is 115 feet long. What is the distance between the points on the ground at which the two ropes are anchored? ? Apply the rules regarding the use of significant digits to each angle and length after all computations are complete. ?
A. 25 ft B. 28 ft or 85 ft C. 25 ft or 73 ft D. 85 ft E. 28 ft
Solve.Find an equivalent expression for sin3 x in terms of function values of x, 2x, or 3x, raised only to the first power.
A. 
sin x
B. 
sin x + 
sin 2x
C. 
sin x - 
sin 3x
D. 
sin x + 
sin 2x - 
sin 3x