Solving Applications Problems Using Trigonometric Equations

Solve application problems.

[MaxiLuca]

This problem was done wrong. 10 years later and no update? Wow. I can't believe my school is using these videos. This wasn't the first mistake on these videos from Mathispower4u I've seen.

[zanakaba]

62.4-53 does not equal 11.2.
Additionally, 11/19 does not equal .4947.

[Sheldoncollier]

Wouldn't you say between May and July? There are only approximately 3 months of sales less than $4000; May, June, and July.