Use trigonometric identities to solve each equation within the given domain. If you can explain it that would be best, I want to know how to actually do it. Thanks!

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Which expression gives the exact value of x?

The limit in 2008 for fica tax was 102,000. so if an individual makes $314,000 in one year, how much in "continuing" medicare tax will they have to pay? (medicare tax is 1.4% for individuals and 2.9% for the self-employed.) a: 2,968.00 b: 4,396.00 c: 6,148.00 d: 9,106.00