Answer:
72
Step-by-step explanation:
you just subtract.
Answer:
5,4
Step-by-step explanation:
Answer:
r=3
Step-by-step explanation:
First we add 2 to both sides.
That leaves us with 10r=30
Then we can divide both sides by 10
r=3
Answer:
we can calculate it by applying trigonometric ratios
Step-by-step explanation: