Determine the period of the given function.y = -3 sin x
A. 2?
B. 
C. 3
D. ?
Answer: A
Mathematics
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Find the indicated trig function of ?, if ? is an angle in standard position with the terminal side defined by the given point.(21, 28); Find cos ?.
A. 
B. 
C. 
D. 
Mathematics
Find the area of the triangle.
A. 76.5 km2 B. 63 km2 C. 153 km2 D. 119 km2
Mathematics
Approximate the area of the triangle to the nearest tenth.
a = 36.2, c = 49.8
A. 782.6 B. 796.1 C. 801.9 D. 786.8
Mathematics
Simplify.
A. 1.8 B. 0 C. -1.8 D. ±1.8
Mathematics