suppose a triangle has sides a,b, and c, and that a^2 + b^2 c^2. let theta be the measure of the angle opposite the side of length c. Which of the following must be true? Check all that apply.
A)the triangle is a right triangle
B)the triangle is not a right triangle
C)theta is an acute angle
D)cos theta 0

Question

suppose a triangle has sides a,b, and c, and that a^2 + b^2 > c^2. let theta be the measure of the angle opposite the side of length c. Which of the following must be true? Check all that apply. 
A)the triangle is a right triangle
B)the triangle is not a right triangle
C)theta is an acute angle
D)cos theta > 0

anonymous · Answer

@cutepochacco

anonymous · Answer

I had options a c and d selected? is that right

aric200 · Answer

No just A and B

aric200 · Answer

Wait I am dumb

aric200 · Answer

C.	the is an acute angle.
 B.	The triangle is not a right triangle.

anonymous · Answer

if a and are greater than c than it would not be a right triangle then right?

aum · Answer

If angle C is 90 degrees, a^2 + b^2 = c^2
If angle C is acute, a^2 + b^2 > c^2
If angle C is obtuse, a^2 + b^2 < c^2

aum · Answer

Since a^2 + b^2 > c^2, angle C is acute and this is NOT a right triangle.

anonymous · Answer

okay yay! I had it right then thanks @cutepochacco

aum · Answer

It is B, C and D.

anonymous · Answer

B,C,D