Respond to this Question
Similar Questions

Trigonometry
Verify the identity. sin2x/cosx + sinx = 2sinx Solve for all values of x: 6cos2x7cosx3=0 If f(x)=cos1/2xsin2x find the value of f(pi)
asked by . on April 20, 2010 
Math
can you prove this equation for me? sin2x X sec2x = 2sinx
asked by Alex on March 25, 2011 
math
Please prove: 2sinx+sin2x = 2sin^3(x)/1cosx
asked by Veronica on January 5, 2010 
math
prove: 2sinx+sin2x = 2sin^3(x)/1cosx
asked by Veronica on January 6, 2010 
Precalculus
Determine the solutions to the equation 2sinx − cos2x = sin2x for 0 ≤ x ≤ 2π . How do I start this question?
asked by Melissa on January 26, 2012 
maths
hey, i would really appreciate some help solving for x when: sin2x=cosx Use the identity sin 2A = 2sinAcosA so: sin 2x = cos x 2sinxcosx  cosx = 0 cosx(2sinx  1)=0 cosx = 0 or 2sinx=1, yielding sinx=1/2 from cosx=0 and by
asked by elle on July 17, 2007 
maths plse help me..
if tangent to the curve y=2sinx +sin2x are drawn at p(x=60degree) then find the area of the quadrilateral formed by the tangent the normal at P and the coordinate axis
asked by Anamika on December 4, 2012 
Calculus
Find the derivative of y with respect to x: y=(1+cos²x)^6 y'=6(1+cos²x)^5 How do you derive inside the brackets? The answer says sin2x, but wouldn't it be 2sinx, using the chain rule.
asked by sh on March 21, 2010 
calculus
im having so much trouble figuring out how to get these answers. i already know the answers i just need to figure out how to get them... directions: find the points of inflection and discuss the concavity of the graph of the
asked by rachel on October 23, 2011 
trigonometry
if sin2x=3sin2y, prove that: 2tan(xy)=tan(x+y) ( here, in sin2x, 2x is an angle., like there's a formula:sin2x=2sinxcosx and sin2y=2sinycosy; ....)
asked by aayush on January 25, 2008