## anonymous one year ago TRIGONOMETRY: Find the exact value of tangent of theta over 2 given tangent of theta = negative 5 over 8 and theta is between 3 pi over 2 and 2 pi. .

1. anonymous

2. anonymous

look up the half angle formula for tangent ( i always forget it, but it is easy to find) then plug in the number

3. anonymous

you can use $\tan(\frac{\theta}{2})=\frac{1-\cos(\theta)}{\sin(\theta)}$

4. anonymous

5. anonymous

this question is so easy i thought u were smart @dumbsearch2

6. steve816

It looks like you need a little break. Have a cookie!|dw:1441166290252:dw|

7. nincompoop

do you get why the formula is the way it is?