Step-by-step explanation:
Every triangle has 3 sides and 3 interior angles whose measures sum to 180 degrees. For example, a triangle with angles , and :
Following this rule, we will apply it to the angles XYZ, YXZ and the unknown XZY:
Finally:
Answer:
it is c 2.5
i just did it
46
c. 80
cos x = sin(x-70)
cos x = cos [90-(x-70)]
cos x = cos (90-x +70)
cos x = cos 160 -x
x= 160-x
2x = 160
x =80
16 is not the solution to the equation