Respond to this Question
Similar Questions

trigpower reducing formulas
Having trouble with this problem: Rewrite the expression as an equivalent expression that does not contain powers greater than 1. Cos³x My answer: cos³x=(cos²x)(cosx) =(1+cos2x/2)(cosx)>cos+cos³x/2...which is wrong
asked by Brian on April 20, 2009 
Trigcheck answer
Solve the equation of the interval (0, 2pi) cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came up with cos²x=1cos²x Ended up with 2cos²x=1 Would the answer be cos²x=1/2???
asked by Brian on April 15, 2009 
Maths
Prove that cos3x/cosxcos6x/cos2x=2(cos2xcos4x)
asked by Joel on July 28, 2016 
Math
Solve the equation 2cos2x = √3 for 0°≤x≤360° I did this: cos2x = √3 /2 2x=30 x=15 x=15, 165, 195, 345 Is this correct? Solve the equation √3 sin2x + cos2x = 0 for π≤x≤π No idea how to approach this one Thanks a
asked by Autumn on October 19, 2017 
math
Solve sin2x + sin4x = cos2x + cos 4x for x in the interval[0,2pi) Hint: the following substitution should come in handy: sin3x= cos3x . tan3x
asked by greg on December 3, 2012

math
Solve the trigonometric equation from 0¡ã¡Üx¡Ü360 tanx+¡Ì3=0
asked by Anonymous on June 4, 2015 
Precalculus
Please help!!!!!!!!!!! Find all solutions to the equation in the interval [0,2π). 8. cos2x=cosx 10. 2cos^2x+cosx=cos2x Solve algebraically for exact solutions in the interval [0,2π). Use your grapher only to support your
asked by Anonymous on January 3, 2013 
Trig
help please!: (sinx + sin2x +sin3x) / (cosx + cos2x + cos3x) = tan2x
asked by Aiden on March 3, 2013 
Calculus
Solve identity, (1sin2x)/cos2x = cos2x/(1+sin2x) I tried starting from the right side, RS: =(cos²xsin²x)/(1+2sinxcosx) =(cos²x(1cos²x))/(1+2sinxcosx) and the right side just goes in circle. May I get a hint to start off?
asked by sh on February 27, 2010 
math
Solve the trigonometric equation from 0¡ã¡Üx¡Ü360 tanx+¡Ì3=0 2 sec^2x+tan^2x3=0
asked by Anonymous on June 4, 2015