Find the x value for point c such that ac and bc form a 2: 3 ratio. segment ab is shown. a is at negative 3, 5. b is at 3, 0. 6 −0.6 4 −2.4

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Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota