# Show that v=90-x

• Oct 6th 2009, 02:44 AM
kevin3000
Show that v=90-x
I need help with this task. Can somone tell whats obvious and give a couple of clues.

http://a.imagehost.org/0712/nam.jpg
• Oct 6th 2009, 03:10 AM
earboth
Quote:

Originally Posted by kevin3000
I need help with this task. Can somone tell whats obvious and give a couple of clues.

I've modified your sketch a little bit:

1. $|\theta| = 180^\circ - 2x$

2. $|\theta| = 2v$

Substitute $\theta$ in 2. by 1. and solve for v.