Multiply or divide and leave the answer in trigonometric notation.4(cos 31° + i sin 31°) ? 5(cos 13° + i sin 13°)
A. 9(cos 44° + i sin 44°)
B. 20(cos 44° + i sin 44°)
C. 9(cos 43° + i sin 43°)
D. 20(cos 18° + i sin 18°)
Answer: B
Mathematics
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A. -35 B. -245 C. -15 D. 295
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Solve the system by elimination.-7x - 6y = -13-3x + 3y = -39
A. {(7, -6)} B. {(6, -5)} C. ? D. {(7, -5)}
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Evaluate.
A. 2 B. 924 C. 665,280 D. 462
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Verify the identity.csc2 x - cos x sec x= cot2 x
What will be an ideal response?
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