Establish the identity.
+ 
= -2 csc ?
What will be an ideal response?
+ 
= 
= 
= 
= 
= - 
= - 
? 
= - 
= - 2 csc ?
Mathematics
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Perform the indicated operation. Simplify the answer when possible.15
- 4
A. 19
B. -12
C. -18
D. 11
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Describe the graph using another equation.y = cos 
- cos 
A. -cos x B. -2sin x C. -2cos x D. -sin x
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Divide.
A. 5 - 2i B. -2 - 5i C. -2 + 5i D. 5 + 2i
Mathematics
A woman at a point A on the shore of a circular lake with radius 4mi wants to arrive at the point C diametrically opposite on the other side of the lake in the shortest possible time. She can walk at the rate of 6mi/h and row a boat at 2mi/h. How should she proceed? (Find ?). Round the result, if necessary, to the nearest hundredth.
Mathematics