Question

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Answer 1

?

Answer 2

what's the problem?

Answer 3

What is 5pi/4 radians in degrees?

Answer 4

Well I would say 225 this is how I got it..

pi rad = 180 degrees
5pi/4 rad = 180 x 5/4 = 225 degrees.

Answer 5

Thank you! Do you have time to help me with some more questions?

Answer 6

depends

Answer 7

What is the arc length of the arc subtended in a circle with radius 6 and an angle of 7pi/8?

Answer 8

21pi/4 Because,
from the formula
s = rθ where s represents the arc length, θ represents the central angle in radians and r is the length of the radius.
s
= 6 x (7pi)/8
= 42π / 8
= 21π / 4

Answer 9

Makes sense! You explain it a lot better! What is the reference angle for 7pi/6?

Answer 10

you there?

Answer 11

7π/3 = 60 degrees (or π/3 in radians) tht should do >_<

Answer 12

that should do? im sorry i thought i could keep asking you questions.

Answer 13

no i didnt mean it tht way

Answer 14

I meant tht should do it

Answer 15

\[if \sin \theta = 12/13 and \cos \theta < 0, what is the \tan of \theta?\]

Answer 16

sorry i cant see the equation

Answer 17

if sin theta is equal to 12/13, and cos theta is < 0, what is the tan of theta?

Answer 18

It's a 5-12-13 right triangle in the 4th quadrant. Draw it; label it and read the function values from the triangle. Short leg 5 is on the horixontal axis.

Sine = LEG/HYP So 13² – 12² = 169 – 144 = 25 = 5² so the third leg is 5. The negatoive sign tells you it is in the 4th quadrant (or maybe the 3rd). But if in the 3rd, then tangent would be positive and you are told it is negative.

tan θ = –12/5 and cos θ = 5/13 and cot θ –5/12 all simply read off the triangle diagram.

Answer 19

If the point (5/13, 12/13) corresponds to an angle theta in the unit circle, what is cot theta?

Answer 20

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Answer 21

cot theta is simply 1/tan theta not to be confused by the tan^-1 function on your calculator. In the unit circle angles are measured from the positive x axis anti clockwise so the point (0,1) represents o degrees. if you plot your point and make a right angle triangle where the hyp goes from your point to (0,0) then tan theta = 12/13 divided by 5/13
= 12/5
Then cot theta = 5/12

Answer 22

what is the correct definition for cot theta?

Answer 23

cos/sin i think how many more questions do you need help with?

Answer 24

29

Answer 25

what is the range of function y=1+2sin(x-pi)?

Answer 26

Nevermind its -2,2

Answer 27

what expression is equivilant to 1-cos^2x?

Answer 28

Sorry I need to stop right now but ill come back got to run some errands