Sunday

November 23, 2014

November 23, 2014

Posted by **`** on Wednesday, April 21, 2010 at 4:06pm.

1. 2sin2x+cosx =0

2. cos2x=-2sinx

3. tanx=2sinx

4. 3cos2x+cosx+2=0

**Answer this Question**

**Related Questions**

Trig - Verify the identity: tanx(cos2x) = sin2x - tanx Left Side = (sinx/cosx)(...

Trigonometry Check - Simplify #3: [cosx-sin(90-x)sinx]/[cosx-cos(180-x)tanx] = [...

trig - Solve for [0, 360) 2sinxcosx + cosx =0 2sinxcosx = -cosx 2sinx = -cosx/...

maths - by equating the coefficients of sin x and cos x , or otherwise, find ...

Trigonometry - Simplify #1: cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/...

Pre-Calc - Trigonometric Identities Prove: (tanx + secx -1)/(tanx - secx + 1)= ...

Math - How do I solve this? tan^2x= 2tanxsinx My work so far: tan^2x - 2tanxsinx...

trig - find all solutions of 2sinx=1-cosx in the interval from 0 to 360

Trig (Last URGENT) - sin2x+cosx=0 , [-180,180) = 2sinxcosx+cosx=0 = cosx(2sinx+1...

maths - hey, i would really appreciate some help solving for x when: sin2x=cosx ...