Answer:
√7 / 4.
Step-by-step explanation:
Sin A = opposite side/ hypotenuse
= √63 / 12
= √9√7 / 12
= 3√7 / 12
= √7 / 4.
9514 1404 393
5
Put the numbers where the letters are and do the arithmetic.
5(3) -2(5) = 15 -10 = 5