Question

What is the missing side length in the triangle below?

Answer 1

Answer:

Step-by-step explanation:

pythagoras theorem

a^2+b^2=c^2

21^2+b^2=29^2

441+b^2=841

b^2=841-441

b^2=400

b=$\sqrt{400$

b=20

therefore the length of a missing side is 20.

Answer 2

Answer:

20

Step-by-step explanation:

Use Pythagorean theorem. A^2+B^2=C^2

29 is the hypotenuse.

21^2+x^2=29^2

x=20