This is my homework. I missed class on last week. That's why I don't know how to solve those problems.

T. Solve on the interval [0, 2 71): sec2 2 9 = 2 tan29 8. Write an infinite geometric series whose sum is 5. 9. A laser beam is to be directed toward the center of the moon, but the beam diverges 0.3 from it's intended path. If it is 240,000 miles from the Earth to the Moon, how far is the beam from it's assigned tar- get? [Note; the moon has a radius of 1079 miles] 10. Verify the identity: "ity = cosx cosy 11. In music the function to convert frequency (f, measured in Hz) to pitch (P, measured in Hz) is given by P(f) = 69 + 12 log2(34'0). What is the frequency of a 37 Hz pitch? 12. In a right triangle, angle B is 15' and side a is 106 m. Solve the triangle