Answer:
b = 3
Explanation:
Since the triangle is right use Pythagoras' identity to solve for b
The square on the hypotenuse is equal to the sum of the squares on the other two sides, that is
a² + b² = c², substitute values
(
)² + b² = 10²
10 + b² = 100 ( subtract 10 from both sides )
b² = 90 ( take the square root of both sides )
b =
=
×
= 3