SOLUTION: I need to find cos of X. the triangle seems to be an obtuse scalene triangle. the hypotenuse is 12, since its the longest side. the adjacent angle i am guessing is 7 and the opposi

Question 734484: I need to find cos of X. the triangle seems to be an obtuse scalene triangle. the hypotenuse is 12, since its the longest side. the adjacent angle i am guessing is 7 and the opposite has a length of 8. how do i solve for the cos x if the question says the answers have to be
�0.28
�0.18
0.18
0.28
please help thank you. ive tried solving it by changing from degrees to radian but im not getting any of these answers.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I need to find cos of X. the triangle seems to be an obtuse scalene triangle. the hypotenuse is 12, since its the longest side. the adjacent angle i am guessing is 7 and the opposite has a length of 8.
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If the side opposite angle x is 8, and the other sides are 7 and 12:

Solve for cos(x)
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I don't know why you're guessing it's 7.
Also, hypotenuse applies only to right triangles.

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