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February 28, 2015

February 28, 2015

Posted by **Rodrick** on Sunday, December 9, 2012 at 11:25am.

1. Simplify (5-√-36)(2+√-1)

A. 16 − 7i

B. 16 + 7i

C. 4 + 7i

2. Choose the point that lies on the curve r = 2 – 3 sin θ.

A. (-5, 3π/3)

B. (-2, π)

C. (1, π/2)

3. Which of the following is not an approximate solution of x5 – 1 = 0?

A. 0.3090 – 0.9511i

B. 0.8090 + 0.5878i

C. 0.3090 + 0.9511i

D. –0.8090 + 0.5878i

4. Simplify (√2-3i)²

A. -7-6√2i

B. 2-9i

C.-5-6√2i

5. Simplify (2√cis47°)(3√8cis89°)

A. 48 cis 223°

B. 48 cis 136°

C. 12 cis 136°

- Trigonometry -
**Steve**, Sunday, December 9, 2012 at 3:04pm(A)

none (2,π) is, but not (-2,π)

(B)

(A)

(B) if you meant (2√8 cis47°)(3√8 cis89°)

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