# Find the angle

y - xtanθ = z/cosθ

Find θ in terms of x,y,z
equation seems so simple, but cant do it

ehild
Homework Helper
What did you try?

ehild

cant do it. pls help. it's urgent

ehild
Homework Helper
You can use the relation between cos(θ) and than(θ):
1/cos(θ)=sqrt(1+tan2(θ)).

ehild