Find 
. Write your answer in standard polar form with the argument in radians.z1 = 5(cos 200° + i sin 200°), z2 = 4(cos 50° + i sin 50°)
A. 
(cos 250° + i sin 250°)
B. 
(sin 150° + i cos 150°)
C. 
(cos 150° + i sin 150°)
D. 
(cos 150° - i sin 150°)
Answer: C
Mathematics
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Match the equation to its graph.y2 = 8x
A. 
B. 
C. 
D. 
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Establish the identity.sec2 
= 
What will be an ideal response?
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