Find the reference angle of the given angle.-419°
A. 121°
B. 149°
C. 59°
D. 31°
Answer: C
Mathematics
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Shade the Venn diagram to represent the set.(A' ? B) ? C
A. 
B. 
Mathematics
Approximate the area of the triangle to the nearest tenth.? = 39°40', b = 14.3, c = 6.5
A. 61.4 B. 14.9 C. 29.7 D. 59.4
Mathematics
Assume that the expressions given are the denominators of fractions. Find the least common denominator. q + r, q - r, q2 - r2
A. q(q - r) B. (q + r)(q - r) C. (q + r)2(q - r)2 D. r(q + r)
Mathematics
Find all solutions of the equation in the interval [0, 2?).cos 2t = sin t
A. 
B. 
C. 
D. 
Mathematics