Question

A triangle has side lengths 10,15 and 7. is the triangle acute, obtuse or right? explain

Answer 1

just identify these :
if 7^2 + 10^2 - 15^2 < 0 then it is obtuse
if 7^2 + 10^2 - 15^2 > 0 then it is acute
if 7^2 + 10^2 - 15^2 = 0 then it is right triangle

Answer 2

whice one do you like ?

Answer 3

which *

Answer 4

i still dont get it @RadEn

Answer 5

can you determine what is 7^2 + 10^2 - 15^2 ?

Answer 6

49 100 225

Answer 7

7^2 = 7 * 7 = 49
10^2 = 10 * 10 = 100
15^2 = 15 * 15 = 225

now, what is the value of 7^2 + 10^2 - 15^2 ?

Answer 8

76

Answer 9

7^2 + 10^2 - 15^2
= 49 + 100 - 225
= ...

Answer 10

76?

Answer 11

49 + 100 = 149
then subtracted by 225
149 - 225 = ... ?