Question

Engineers are analyzing the performance of windshield wiper blades. At the end of one swipe, the tip of a blade is at (−5, 7) when represented graphically. What is the sine value of this function?
negative 7 square root 74 divided by 74 7 times square root of 74 over 74 square root 74 negative 5 times square root of 74 over 74

Answer 1

The answer is 7√74/74 or seven times the square root of 74 over 74.

I just took the test and this was correct!

Answer 2

The correct answer to this question is "7 times square root of 74 over 74."

First, we need to get for the "r."
r^2 = (−5)^2 + 7^2
r^2 = 25 + 49
r^2 = 74
r = square root of 74

Then, after that, we need to formulate the equation of a sin:
sin x = 7 / r
sin x = 7 / sqrt(74)
sin x = 7 * sqrt (74) / 74