Wednesday

April 23, 2014

April 23, 2014

Posted by **amanda** on Thursday, January 12, 2012 at 8:04pm.

- pre calc -
**Reiny**, Thursday, January 12, 2012 at 8:38pmSo you are told that Ø is in quadrant II, and it looks like you are dealing with the 3-4-5 right-angled triangle

so y = 3, x = -4, r = 5

cosØ = -4/5

**Related Questions**

Pre Calc. - Use the sum or difference identity to find the exact value of sin255...

Algebra II - Multiple Choice (theta) means the symbol 0 with the dash in it. 1.)...

Math - If 0<theta<90 and tan theta= (square root 3)/2, find cos theta? tan...

math - if 0< theta < 90 and tan theta equals pie3/2, find cos theta.i put ...

Precalculus(NEED HELP ASAP PLEASE!!) - cot(theta)= 3 pi < theta < 3pi/2 ...

math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...

Algebra II - Find cos theta if sin theta = 3/5 and 90 degrees<theta<180 ...

easy trig - If sin(theta)=[sqrt(70)]/7 and theta is in Quadrant two, find the ...

simple trig - If sin(theta)=[sqrt(70)]/7 and theta is in Quadrant two, find the ...

Math 30 Trig - What is the value of theta if 9 cos^2 theta + 3 cos theta = 0 ...