Review Questions
Review Questions
1. If sec21 = sin , which one of the following is a possible value for ?
(A)
(B)
(C) 0
(D)
(E)
2. Solve the following equation: cos (sin–1(sin 60º)) ⁄ cos 30º = ?
(A)
(B)
(C)
(D)
(E)
3. S and T are the centers of their respective circles. The two circles are mutually tangent at point U. If segment RS = d, what is the radius of the smaller circle in terms of d and ?
(A) cos
(B) d sin
(C) d(cos – sin )
(D) d(sin – cos )
(E) d(sin + cos )
4. In the triangle pictured below, what is the measure of BC?
(A) 12.89
(B) 13.79
(C) 14.45
(D) 17.71
(E) 17.94
5. In the triangle pictured below, what is ?
(A) 25.7º
(B) 31.2º
(C) 37.7º
(D) 39.5º
(E) 68.3º
6. Which of the following values is defined?
(A) sin–1 2
(B) tan
(C) sec
(D) tan–1 0
(E) cot
7. 1 + tan2x – cos2x – cos2x tan2x is equivalent to which of the following expressions?
(A) 1 – sec2x
(B) cos2x
(C) tan2x
(D) cot2x
(E) cot2x
8. If sin 2x = 1/ 2, what is sin2x cos2x?
(A)
(B)
(C)
(D) 1
(E) 2
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