trigonometry
posted by Erick .
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

if you're going to do a homework dump, it's better if you show your work and where you get stuck.
Respond to this Question
Similar Questions

Math
Evaluate *Note  We have to find the exact value of these. That I know to do. For example sin5π/12 will be broken into sin (π/6) + (π/4) So... sin 5π/12 sin (π/6) + (π/4) sin π/6 cos π/4 + cos … 
Math integrals
What is the indefinite integral of ∫ [sin (π/x)]/ x^2] dx ? 
Trig
The set of solution(s) of 2 cos^2 (θ)  13 cos(θ) + 6 = 0 that is(are) in the interval (0,π/2) is one of following a. {π/6} b. {π/3} c. {π/4} d. {π/3, π/6} e. {π/6, π/4} 
Precalculus
Use one of the identities cos(t + 2πk) = cos t or sin(t + 2πk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(19π/4) (b) sin(−19π/4) (c) cos(11π) (d) cos(53π/4) … 
Trig Help!
Question: Trying to find cos π/12, if cos π/6 = square root 3 over 2, how to find cos π/12 using DOUBLE angle formula? 
Trig
find all solutions to the equation √3 csc(2theta)=2 Would the answer be π/6 + 2πn, 5π/6 +2πn or π/6 + πn, 5π/6 +πn? 
TRIGONOMETRY
Can you check my work, please? This is for a trig study guide for my final next week. I'd like to know if I'm doing this right. :) 2. The polar coordinates of a point are given. Find the rectangular coordinates of each point. a. (5,(π 
Math, please help
Which of the following are trigonometric identities? 
Precalc/Trig
Sorry there are quite a few problems, but I just need to know if these are correct (and if they aren't, where I went wrong): 1. Solve these equations. tanθ = √3 θ = 2π/3 + kπ θ = 5π/3 + kπ … 
Calc 1
The point (1,0) lies on the curve y=sin(10π/x). A) if Q is the point (x,sin(10π/x), find the slope of the secant line PQ. Points are 2,1.5,1.4,1.3,1.2,1.1,0.5,0.6,0.7,0.8,0.9 Do slopes appear to be approaching a limit?