I have searched my book front to back to find just one example of this type of problem and fond nothing. I
have also looked through both this forum and yahoo answers and saw nothing this ridiculous.
PLZ help me and save me from an anurism
Sin x = -2/5 x in quad 3
exact value of cos (x+Pi/4)
and the second seems easier but im afraid to try it
Exact value of sin 2x
I already did something i though helped, but got me no closer to the answer
sin x^2 + cos x^2 = 1
cos x^2 = 1+ 2/5^2=1 + 4/25=29/25=sqrt-29/25=sqrt-29/5
and this is where i contemplate my lifes worth..... This problem was on my final at OSU and i need a good grade! Help!
