Posted by Carlos on Tuesday, December 4, 2012 at 12:30pm.
Please check if i did right!
2. Choose the point that lies on the curve r = 2 – 3 sin θ.
A. (5, 3π/2) <
B. (–2, π)
C. (1, π/2)
D. (5, 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
5. Change 4√2  4√2i to trigonometric form.
A. 32 cis 135° <
B. 8 cis 225°
C. 8 cis 45°
D. 32 cis 45°
6. Simplify (2 cis 100°)7.
A. 2 cis 700°
B. 128 cis 280°
C. 128 cis 340°
D. 2 cis 340° <
8. Simplify 12(cos 52° + i sin 52°)/ 8(cos 128° + i sin 128°)
A. 3/2cis 152°
B. 3/2cis 76° <
C. 3/2cis 180°
D. 3/2cis 284°
9. Simplify i 45.
A. –i
B. 1 <
C. i
D. –1
10. Given the rectangularform point (–1, 4), which of the following is an approximate primary representation in polar form?
A. (4.12, 1.82)
B. −(4.12, 1.82)
C. (−4.12, −1.33) <
D. (4.12, 4.96)
11. Simplify (√2 cis 47°)(3√8
A. 48 cis 223°
B. 12 cis 223°
C. 48 cis 136°
D. 12 cis 136° <
12. Which of the following statements are true?
(i) r = 4 – 3 sin θ is the equation for a limaçon rotated 90°.
(ii) r = 3 cos 8θ is the equation for a rose curve with 8 petals.
(iii) rθ = 16 is the equation for a circle.
A. (ii) only
B. (i) only <
C. (i) and (ii)
D. (i) and (iii)
13. Describe the rotation required to transform the graph of r = 4 − cos (θ − 30°) sin (θ − 30°) to the graph of r = 4 − cos θ sin θ.
A. 30° counterclockwise
B. 60° clockwise <
C. 60° counterclockwise
D. 30° clockwise
14. Simplify (4 − 9i ) − (2 − 4i ).
A. 2 − 13i <
B. 2 − 5i
C. −5 + 2i
D. 2 + 13i
15. Find the absolute value of –2 + 6i.
A. 4
B. 4√2
C. 2√2
D. 2√10<

Trigonometry  Steve, Tuesday, December 4, 2012 at 2:30pm
2. since sin(3π/2) = 1, (5,3π/2) would be on the curve, but not (5,3π/2). In fact, none of the choices fits.
3. B
5. B
6. C
8. D
9. C (if that's i^45)
10. A
11. B or D (text cut off)
12. ok
13. D
14. B
15. ok
Hmm. Looks like you have some reviewing to do.

Trigonometry  Erick, Wednesday, December 5, 2012 at 1:48pm
thank you so much, i just missed a lot of school in the past month and im trying to catch up
Answer This Question
Related Questions
 Math, please help  Which of the following are trigonometric identities? (Can be...
 TRIGONOMETRY  Can you check my work, please? This is for a trig study guide for...
 Math integrals  What is the indefinite integral of ∫ [sin (π/x)]/ x^...
 Precalc/Trig  Sorry there are quite a few problems, but I just need to know if ...
 Math  Evaluate *Note  We have to find the exact value of these. That I know to...
 Trig Help!  Question: Trying to find cos π/12, if cos π/6 = square ...
 Calc 1  The point (1,0) lies on the curve y=sin(10π/x). A) if Q is the ...
 Precalculus  Use one of the identities cos(t + 2πk) = cos t or sin(t + 2&#...
 Trig  find all solutions to the equation √3 csc(2theta)=2 Would the ...
 Trig  The set of solution(s) of 2 cos^2 (θ)  13 cos(θ) + 6 = 0 that ...
More Related Questions