Help please!! The measures of the angles of a triangle are shown in the figure below. Solve for x

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)

If the value of cos330°is√3/2 then find cos 165°.