# Math Help - urgent triangle help!

1. ## urgent triangle help!

alright i am given the base of a trianlge but no side length, how do i find the height?
the base = 34.64
angle a= 30
angle b=120
angle c= 30

if that helps?
i dont know how to do it and i've been searching everywhere.
please if you can help me and show me how it would be great! (Rofl)

2. Originally Posted by cheerbaby94
alright i am given the base of a trianlge but no side length, how do i find the height?
the base = 34.64
angle a= 30
angle b=120
angle c= 30

if that helps?
i dont know how to do it and i've been searching everywhere.
please if you can help me and show me how it would be great! (Rofl)
Extend a perpendicular line segment (which is the height) from the vertex to the base. Note that it bisects the base. Then use trigonometry:

$\tan{30} = \frac{h}{\displaystyle\frac{b}{2}}$

3. thank you!

i got 519.6
isnt that too high of a number for it?
it doesn't seem right?

4. Originally Posted by cheerbaby94
thank you!

i got 519.6
isnt that too high of a number for it?
it doesn't seem right?
Yep, it's not right. You made a computation mistake. Recheck it.