how do you solve the unknown side in each right triangle?

And as CPhill said earlier, too

It depends upon which side is "unknown"

If it's the hypoteneuse, then we have

Hypoteneuse = √(Leg₁² + Leg₂²)

If it's a leg, then we have

Missing Leg = √(Hypoteneuse² - Known Leg ²)

It would certainly help if you gave an example along with your question, but no worries:)

There are quite a few ways to solve for a side in a right triangle, and one of the most common is the Pythagorean Theorem: 

 $${{\mathtt{a}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{b}}}^{{\mathtt{2}}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$

a and b are legs of the triangle (the two shorter sides) and c is the hypotenuse (longer, diagonal side)

If you have the measure of an angle, you can use trigonometry to solve for an unknown side (using sine, cosine, tangent)

It really depends on what info you have about the triangle. . .

Nice pic, kitty<3 !!!

Thumbs Up !!

I think we should call today.

"Mutual Admiration Day"  MAD for short.

Hi Kitty!

I think we should call it :

Imperial

Minims

Mutual

Admiration

Day

Otherwise known as   "I'M  MAD"