Solve 15=35sinΘ Equation with No Calculator

[Zashmar]

Homework Statement

please help me solve the following, I do not have a good enough calculator :(

15=35 sinΘ($-35 sin\vartheta \pm( \sqrt{(35sin \vartheta)^2 -294)}/-9.8$) -4.9(($-35 sin\vartheta \pm( \sqrt{(35sin \vartheta)^2 -294)}/-9.8$)^2

It is a massive equation, I tired using wolfram alpha but it took too much computational power...

PS. The parentheses should cover all of the square root, so that it was divided by -9.8
Thanks

 

[nasu]

Can you show the problem you want to solve?
This does not look right.

 

[Mark44]

This appears to be a continuation of the thread at https://www.physicsforums.com/showthread.php?t=748846.

Zashmar, do not start new threads with the same problem.