Originally Posted by

**mandy123** I am working on a project, and I was wondering if you could find a length of a side of a right triangle by using the trig functions such as

**sin A**= opposite/hypotenuse, **cos A**=adjacent/hypotenuse, and

**tan A**= opposite/adjacent

(I know you can use pythagoreans theorem, but I need to find another way to find the missing side)

If my example is

**Town ***x* is 9 miles from town *y*, and 12 miles from town *z*. A road connects towns *y* and *z* directly. Find the length of this road. 9^2 + 12^2 = c^2

how can i find the length of c using trig. functions? (I know c=15 by using pythagorean theorem)

Please Help

Thanks