The sum of three consecutive integers is 186. what are the integers? the first integer is

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.