Express the sum or difference as a product of sines and/or cosines.sin  + sin 

A. 2 cos(9?) sin ?
B. 2 sin  sin ?
C. 2 sin(9?)
D. 2 sin  cos ?


Answer: D

Mathematics

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Shade the regions representing the set.C' ? (A ? B)  

A.

B.

C.

D.

Mathematics

Use a calculator to find the value of the expression rounded to two decimal places.cos-1 

A. 151.87 B. -61.87 C. 2.65 D. -1.08

Mathematics

Find the exact value of the expression without using a calculator.

A. -2
B. - 
C. - 
D. - 

Mathematics

Identify whether the number described is a parameter or a statistic.The average height of American women is 63.8".

A. Parameter B. Statistic

Mathematics