Question

Which of the following could not be a value of n?

A. 7
B. 10
C. 13
D. 22

Answer 1

a^2+b^2=c^2

Answer 2

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

Answer 3

it cant be applied for this its only for recatnagel right

Answer 4

Yes your right.

Answer 5

@chmvijay

Answer 6

is it a rt angle tri ..i dont thk so

Answer 7

its not right angel triangle

Answer 8

now im even more confused.

Answer 9

LOL

Answer 10

@chicagoblkhaks Don't worry

Answer 11

Use the Law of Cosines.

c^2 = a^2 + b^2 - 2*a*b*cos(C),

Answer 12

i dont know how to do that, and i feel stupid saying it. but i dont.

Answer 13

c^2 = a^2 + b^2 - 2*a*b*cos(90)
= a^2 + b^2 - 2*a*b*0
= a^2 + b^2

Answer 14

Use the source that I used.
http://mathforum.org/library/drmath/view/54119.html

Answer 15

Did it help you? @chicagoblkhaks

Answer 16

not a whole lot ...

Answer 17

why COS 90 its not right angel triangle @calculusxy