Use an identity to write the expression as a single trigonometric function or as a single number.
A. cos 39°
B. tan 39°
C. cot 39°
D. sin 39°
Answer: B
Mathematics
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Evaluate.
A. 165
B. 
C. 495
D. 1980
Mathematics
Solve.A cruise boat travels at its top speed 48 miles downstream in 4 hours and returns to its starting point upstream, also at its top speed, in 6 hours. Find the speed of the stream.
A. 22 mph B. 12 mph C. 10 mph D. 2 mph
Mathematics
Determine the reference angle for the given angle.? = 422°
A. 62° B. 152° C. 118° D. 28°
Mathematics
Find the inverse of the matrix, if it exists.
What will be an ideal response?
Mathematics