Question

The right triangle has legs a and b and hypotenuse c. If b=12 and c=13, then what does a equal?

Answer 1

Answer:

a = 5

Step-by-step explanation:

a^2 + b^2 = c^2

Substitute

b = 12

c = 13

a^2 + 12^2 = 13^2

a^2 + 144 = 169

a^2 = 25

a = $\sqrt{25}$

a = 5

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Answer 2

Answer:

use Pythagoras theorem

Step-by-step explanation:

$a^{2} + b ^{2} = c ^{2} \\ a ^{2} + 12 ^{2} = 13 ^{2} \\ a = 5$