Answer:
x = 20
Step-by-step explanation:
→You can use the Pythagorean Theorem to solve this:
[tex]a^2 +b^2=c^2[/tex]
→The "a," and "b," are the legs, 21 and x, while the "c," is the hypotenuse, 29. In this case, we are trying to find the value of a leg:
[tex]21^2+b^2=29^2[/tex]
[tex]441+b^2=841[/tex]
→Subtract 441 from both sides:
[tex]b^2=400[/tex]
→To get "b," by itself, you must take the square root of both sides, like so:
[tex]\sqrt{b^2} =\sqrt{400}[/tex]
[tex]b = 20[/tex]
