9514 1404 393
Answer:
1 -√2
Step-by-step explanation:

tan(7π/8) = 1 -√2
Multiply 17x5=85,85+5=90 so aswer is 90
9/200. divide 45 and 1000 both by 5 to reduce it.
Answer:
Good luck :)
Step-by-step explanation:
S=2πrh+2πr ²
subtract 2πr ² from each side
S -2πr ² = 2πrh
divide by 2πr from each side
(S -2πr ² )/ 2πr = h
Answer:
GJ is perpendicular to IK
Step-by-step explanation:
GJ is perpendicular to IK