I sent question about rt triangle, ABC, needing to find a & b. altitude was 4, base a and hypotenuse b. You mentioned knowing another angle. There is one < A is 45 degrees. Thanks for all your help. Math is not an easy subject for me.

Answer 1

I suspect angle B is a right angle. Is that true?

If so, then both legs are equal, a=c=4

hypotenuse then is 4sqrt2

Remember, hypotenuse^2 = leg1^2 + leg2^2

If this is not a right triangle, there is no way to solve it.

Answer 2

With 45º on one side, the other angle would be 180º-90º-45º = 45º

Altitude = base = 4

Use Pythagorean theorem.

4^2 + 4^2 = b^2