In a Projectile Motion Question, How to Find Theta?

[Sebastian_]

Homework Statement

Excuse me for asking such a simple question, but, in a projectile motions question, if given an initial horizontal speed of 7 mps and a initial vertical speed of 30 mps how do I find theta? (the angle at launch)

Relevant Equations

I was told this was the equation for theta so: tan-1(Voy/Vox)

Solving the relevant equation tan-1(30/7) = 76.865977693604 = 77

Just need confirmation or a correction since I am very new to physics in general

 

[UnPetitGarcon]

Velocity is a vector with magnitude and direction. The vertical and the horizontal velocity are its components in x and y direction. To find out its angle relative to the horizontal, just divide the vertical with the horizontal and take the inverse tangent of it. Your answer is correct.

 

[Sebastian_]

Thank you very much for clearing that up