SOLUTION: I have a hypotnuse of 7 and the opposite is 3.The adjacent is unknown.I know that you have to use sin, but I'm not quit sure how to solve for this.

Algebra ->  Trigonometry-basics -> SOLUTION: I have a hypotnuse of 7 and the opposite is 3.The adjacent is unknown.I know that you have to use sin, but I'm not quit sure how to solve for this.      Log On


   

Question 314989: I have a hypotnuse of 7 and the opposite is 3.The adjacent is unknown.I know that you have to use sin, but I'm not quit sure how to solve for this.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
it is a right triangle, and you know two sides ___ use Pythagoras

x^2 = 7^2 - 3^2