Question

In ΔABC, ∠A is a right angle. What is the value of y?

Answer 1

Y = 7sin(30) = 3.5
_________

Answer 2

Sin 30=y/7 
y=3.5ft 
You would start with your sin equation ( Sin angle= opposite side over hypotenuse)since you are trying to find the Opposite side length. So you would have sin 30 equals y over 7. Then you multiply over 7 to both sides.Last find the value of sin 30( sin 30=.5) and multiply that by 7, your answer is 3.5ft