Posted by **Sandy** on Wednesday, March 10, 2010 at 5:05pm.

I don't understand how to do this type of question? If 9cos^2 theta +3cos theta=0, where 90 degrees <theta<180 degrees, what is the value of theta, correct to the nearest tenth of a degree. Could someone please explain. Thanks

## Answer this Question

## Related Questions

- Trig - Given 2secant^2 (theta) + 1 = 5 secant (theta), solve for (theta), to the...
- Trig(continued) - 2)Find the solution of sin2 theta = cos theta if 0 -< theta...
- Algebra II - Multiple Choice (theta) means the symbol 0 with the dash in it. 1.)...
- trig 30 - If cos^2 theta -6 sin 2 theta =0, one value of theta is a)0 degrees b...
- trig - If sin theta is equal to 5/13 and theta is an angle in quadrant II find ...
- Trigonometry - I don't understand how I'm supposed set the problem up or what ...
- Calculus - I wanted to confirm that I solved these problems correctly (we had to...
- Mathematics - 1. Show that Sin3 Theta - Cos2 Theta = (1 - Sin Theta)(4Sin^2 ...
- math - theta is an angle in standard position with a domain of 0 degrees < ...
- Math 30 Trig - What is the value of theta if 9 cos^2 theta + 3 cos theta = 0 ...

More Related Questions