Hello,

Can someone please help me solve these 2 problems?

1. sqrt(3)sin2x=cos2x

2. cos(x/2)-1=0

Thanks!

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- Nov 7th 2009, 03:21 PMl flipboi lTrigonemetric Function - Solving
Hello,

Can someone please help me solve these 2 problems?

1. sqrt(3)sin2x=cos2x

2. cos(x/2)-1=0

Thanks! - Nov 7th 2009, 03:26 PMDebsta
Q1 Rewrite so you get sin2x/cos2x = 1/sqrt(3).

Let 2x = A and solve for A

Then put 2x back in and solve for x

Don't forget to consider the domain.

Q2 Let x/2 =A, write as cosA = 1, solve for A, sub in x/2 and solve for x. Again, watch the domain. - Nov 7th 2009, 06:53 PMl flipboi l
- Nov 7th 2009, 07:05 PMDebsta
- Nov 7th 2009, 07:46 PMl flipboi l
Thanks!