I'm having trouble with these problems Question is: "Solve the following equations for 0<X<360 1) Sin(2X)=Cos(X) 2)1+Sin(x)=Cos^2(x) If anyone could help, I'd be really grateful.
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Originally Posted by LexiLou I'm having trouble with these problems Question is: "Solve the following equations for 0<X<360 1) Sin(2X)=Cos(X) 2)1+Sin(x)=Cos^2(x) If anyone could help, I'd be really grateful. Hi LexiLou, , so [1]
[2] Identity:
Originally Posted by masters Hi LexiLou, , so [1] It is better to factorise these and when you divide through by you potentially divide by 0. Therefore in addition \cos(x)=0 also applies. This means that
Originally Posted by e^(i*pi) It is better to factorise these and when you divide through by you potentially divide by 0. Therefore in addition \cos(x)=0 also applies. This means that Thanks, e^(i*pi). Got in a hurry! Thanks for cleaning up after me.
Thanks so much, that helped a lot.
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