SOLUTION: So confused on this! Help would be so appreciated If sec (theta)= -13/5 and 90 degrees < theta < 180 degrees, find the exact value of sin 2(theta)

SOLUTION: So confused on this! Help would be so appreciated If sec (theta)= -13/5 and 90 degrees < theta < 180 degrees, find the exact value of sin 2(theta)

Algebra.Com

Question 589610: So confused on this! Help would be so appreciated
If sec (theta)= -13/5 and 90 degrees < theta < 180 degrees, find the exact value of sin 2(theta)
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
If sec (theta)= -13/5 and 90 degrees < theta < 180 degrees, find the exact value of sin 2(theta)
**
use x for theta
In quadrant II [90�-180�]
if sec x=-13/5
cos x=-5/13
sin x=12/13
..
sin 2x=2sinx cos x=2*12/13*-5/13=-120/169
RELATED QUESTIONS
So confused on this! Help would be so appreciated If sec (theta) sin (theta) = 2, find... (answered by lwsshak3)

Solve the following equation on the interval [0, 360 degrees]: sin2x=1 This is what... (answered by ikleyn,greenestamps)

I have three questions that I need extreme help on. 1. Find sec thata if sin theta=-4/5 (answered by midwood_trail,solver91311)

Find sec(theta) if tan(theta) = 1/4 and 180 degrees < (theta) < 270... (answered by stanbon)

if sec theda = (-13/5) and 90 degrees < theda < 180 degrees , find the exact value of... (answered by MathLover1)

So confused on this! Help would be so appreciated Simplify (1-cos^2 (theta))/ (1+cot^2... (answered by lwsshak3)

I am struggling with Trigonometry and would appreciate your help on this problem: Use... (answered by lwsshak3)

I am struggling with Trigonometry and would appreciate your help on this problem: Use... (answered by Alan3354)

suppose the terminal side of a ray is between 90 and 180 degrees and sec(theta) =... (answered by robertb)