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?

Answer 1

Answer:

$\frac{7}{\sqrt{74} }$

Step-by-step explanation:

Please look at the attached photo for your information

Sine value = $\frac{Height}{hypotenuse}$ but here we know that the tip of a blade is at (−5, 7)

=>  Heigh = 7 (the value of y)

=> Hypotenuse = $\sqrt{7^{2} + 5^{2} }$ = $\sqrt{74}$

We substitute two values have just been found in the sine value fomula:

$\frac{7}{\sqrt{74} }$