## anonymous 4 years ago I need some help, am totally lost... Use the given information to evaluate each expression. sin α =√(3 /2) with 90° < α < 180° (a) sin(α/2) (b) cos(α/2) (c) tan(α/2)

1. anonymous

you know $$\alpha =120$$ since $$\sin(120)=\frac{\sqrt{3}}{2}$$

2. anonymous

your job is to know find $$\sin(60),\cos(60),\tan(60)$$

3. anonymous

*now is what i meant, although it would also be good to "know" those values

4. anonymous

Thank You so much, it geared me in the right direction! :)

5. anonymous

yw