Man our whole class struggled at this one the whole period.

Solve for x

1.

Prove

2.

3.

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- Nov 1st 2007, 07:14 PMFreaky-PersonIdentities and solve for x
Man our whole class struggled at this one the whole period.

Solve for x

1.

Prove

2.

3. - Nov 1st 2007, 08:04 PMFreaky-Person
OOOhh! nevermind question 1!

I just remembered that after 2 hours of deliberation between everyone in the class + 1, I finally got it.

I got up to on question 2

And

On the last one.

PLEASE HELP T.T - Nov 1st 2007, 08:05 PMSoroban
Hello, Freaky-Person!

I assume you know the Double- and Half-angle Identities.

. . Here's #2 . . .

Quote:

2) Prove: .

We have: .

- Nov 1st 2007, 11:16 PMDivideBy0
- Nov 1st 2007, 11:39 PMkalagota
- Nov 2nd 2007, 07:23 AMSoroban
Hello, Freaky-Person!

Quote:

1. Solve for

We have: .

. .

. .

. .

. .

. .

And we have two equations to solve . . .

Divide by

. .

. .

Quadratic Formula: .

. . Hence: .

Therefore: .