1.Biến đổi thành tích các biểu thức sau A = 1 + 2sin a - cos 2a; B = sin a + sin 2a + sin 3a + si sin4a+sin5a+sin6a C = cos^2 (3a) + cos^2 (2a) - sin^2 a; D = cos^4 a - cos 2a + 2sin^6 a

30 points and i will give brainliest the club will base its decision about whether to increase the budget for the indoor rock climbing facility on the analysis of its usage. the decision to increase the budget will depend on whether members are using the indoor facility at least two times a week. use the best measure of center for both data sets to determine whether the club should increase the budget. assume there are four weeks in a month. if you think the data is inconclusive, explain why.

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m

A. what is the area of the base? use complete sentences to explain your reasoning. b. what is the volume of the prism? use complete sentences to explain your reasoning.