Recent content by ndmp

that was the question unfortunately, it had a multiple choice aspect :(. with 5 different degree answers. So 3x = asin .966 3x=75 x=25 thanks so much :PPPPPP

thanks for your help i have been trawling wikis and googling just to get a worked example... And i won't be able to sleep if i can't figure it out lol :P It might help i know that the answer to sin3x=.966, that x =25 degrees, i just don't know how to prove it

no that has not been proven, its just a track i thought i could go down. The only information that has been given was in step 1. Are u allowed to say that sin(3x) = 3 sin(x) is that a proven law?

Homework Statement sin3x=.966 then x could be equal to (answer in degrees) Homework Equations solving trigonometric equations The Attempt at a Solution sin3x=3sinx 3sinx=.966 sinx=.966/3 sinx=.322 cos^2x + sin^2x=1 (pythagorean theory) cos^2x +.322^2=1 1-.322^2=cos^2x lol i...