Friday
April 18, 2014

Homework Help: Trigonometry

Posted by . on Tuesday, April 20, 2010 at 4:03pm.

Verify the identity.

sin2x/cosx + sinx = 2sinx


Solve for all values of x:

6cos2x-7cosx-3=0

If f(x)=cos1/2x-sin2x find the value of
f(pi)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Trig - Verify the identity: tanx(cos2x) = sin2x - tanx Left Side = (sinx/cosx)(...
maths - hey, i would really appreciate some help solving for x when: sin2x=cosx ...
math - solve each equation for 0=/<x=/<2pi sin^2x + 5sinx + 6 = 0? how do ...
Trig - If secx = 8 and -pi/2 < x < 0, find the exact value of sin2x Use ...
maths - by equating the coefficients of sin x and cos x , or otherwise, find ...
check math - Here are my answers. Can you check if I got the right answers? ...
Trigonometry - Simplify #1: cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/...
Trigonometry - 4. Find the exact value for sin(x+y) if sinx=-4/5 and cos y = 15/...
Math - prove identity Sin2x - sinx/cosx + cos2x= sinx/cosx + 1
trigonometry - if sin2x=3sin2y, prove that: 2tan(x-y)=tan(x+y) ( here, in sin2x...

Search
Members