Question

Find c if a = 5 and b = 12.
Right triangle with sides a, b, and c. Side c is opposite the right angle.
A. c = 17
B. c = the square root of17
C. c = 13
D. c = the square root of13

Answer 1

use pythagorean theorem

Answer 2

\[c^2=a^2+b^2\]

Answer 3

\[a^2+b^2=c^2\]
\[5^2+12^2=c^2\]
\[25+144=c^2\]
\[c^2=169\]
\[c=13\]
Therefore C