Find all solutions of the equation. Express the solution in radians.cos x = - 
A. 
+ 2n? or 
+ 2n?
B. 
+ 2n? or 
+ 2n?
C. 
+ 2n? or 
+ 2n?
D. 
+ 2n? or 
+ 2n?
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Multiply. Simplify if possible.150 ? 
A. 90 B. 200 C. 120 D. 150
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Change the measurements on this scale drawing to decimals and round them to the nearest tenth of an inch. src="https://sciemce.com/media/4/ppg__tttt0623191133__f1q50g6.jpg" style="vertical-align: -17.0px;" /> in. length b is:
A. 0.2 in.
B. 0.3 in.
C. 0.1 in.
D. 0.4 in.
a 4
in. b 
in. c 
in. d 
in. e 2
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Solve the equation.Solve sin ? = 
for ?, where 0° ? ? ? 90°.
A. 30° B. 90° C. 60° D. 45°
Mathematics