Answer:
No
Step-by-step explanation:
Sides AB to DC aren't congruent/parallel
Sides BC to AD aren't congruent/parallel
My guess is that you're doing the Law of Cosines? You have everything you need for that except the angle theta, which is the thing you need to find. It's set up like this: (8)^2 = (10)^2 + (5)^2 -[2(10)(5)cos A] I used A instead of theta. Doing that math, you have: 64 = 100 + 25 -[ 100 cos A]; 64 = 125 - 100 cos A;
-61 = - 100 cos A; -61 / -100 = cos A; .61 = cos A. Now use your inverse function on your calculator to find cos^-1(.61) and that equals 52.4
Answer:
yes it look right like the one you have to do 2x+5=39
There are no restrictions on the domain of the since function.
The domain is all real numbers.
