Answer:
I told my parents and x= 18
Step-by-step explanation:
Answer: b is right angel triangle 90 degrees
b - c is straight line that adds up to 180 degrees
9 is the height for sin, cos and sine
Step-by-step explanation:
10 rows because that's right
You can eliminate 81 because we know 
The dot is on approximately 9.32 (my estimate) so I would square that number:
(9.32)² = 86.8624 so if you round this you get 87
13/8 or 1 5/8
3/4 becomes 7/8 when add it is 13/8