Ingrid claims that Cosine (negative StartFraction pi over 2 EndFraction + y) = sine (y). Review Ingrid’s steps in verifying her claim. Which statement describes Ingrid’s claim that Cosine (negative StartFraction pi over 2 EndFraction + y) = sine (y) and her steps in verifying her claim?

Ingrid’s claim is correct, and her steps are correct.
Ingrid’s claim is correct, but her steps are incorrect.
Ingrid’s claim is incorrect, but her steps are correct.
Ingrid’s claim is incorrect, and her steps are incorrect.

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

How do you solve a question like this?

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a. what is the independent and dependent variables? b. find the amplitude and the period of the function. c. create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.