7. Let x be a positive number and let 0 be the angle defined by (a) Express A and B in terms of x. Do not use any trigonometric or inverse trigonometric functions in your e = cos -1(23•x). answers.) Use this information and the right triangle sketched below to answer parts (a), (b), and (c) to the right. A = and B= (b) Express the area A(x)of the triangle as a function x. Do not use any trigonometric or inverse trigonometric functions in your answers. 1 A(x) = Part (c): Express sin 20 in terms of x. Do not use any trigonometric or inverse trigonometric functions in your answers. sin 20 =

Let x be a positive number and let theta be the Engle defined by theta= Inverse cos (23 X)

A) express A and B in terms of X.  Do not use any trigonometric or inverse trigonometric function in your answer.

B) express the area A(x) of the triangle function x. Do not use any trigonometric or inverse trigonometric function in your answer.

C) Express sin2theta in terms of x. Do not use any trigonometric or inverse trigonometric function in your answer.