Which of the following expression expressions is equivalent to cos3x/sinxcosx? a.) cscxcos2x-secxsin2x b.) secxcos2x-cscxsin2x c.) secxcosx-cscxsinx d.) cscxcosx-secxsinx

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.