60 divided by 4.
EXPLANATION:
If his grandfathers age is 3 more than whatever 4 times seans age is. we can do 63 - 3. which is 60.
Then you fond seans age. 60 divided by 4 is the equation to find seans age.
sry its a bad explanation but I hope the answer helps!
It would be (all under a big square root) (-7-5)squared + (3+2) squared. This equals to about root 169
Answer:
Step-by-step explanation:

Hint: 1 - Cos² A = Sin² A
Answer :im not very sureeee
Step-by-step explanation: