List the elements in the set .Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. A ? (B ? C)
A. {q, s, w, y}
B. {q, r, w, y, z}
C. {q, y, z}
D. {q, s, u, w, y, z}
Answer: A
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A. -75 m/sec B. 37.5 m/sec C. 187.5 m/sec D. 75 m/sec
Use the power-reducing identities to rewrite the expression that does not contain trigonometric functions of power greater than 1.cos4 x
A. 
B. 
C. 
D. 
Solve the triangle, if possible. Approximate values to the nearest tenth when appropriate.? = 30°, a = 19.40, b = 38.8
A. ? = 60°, ? = 90°, c = 33.6 B. ? = 60°, ? = 60°, c = 33.6 C. ? = 90°, ? = 60°, c = 33.6 D. No solution
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A. True B. False