Use the following information to answer questions 37-40.

ln the figure below, T is the midpoint of NR and of PS, MT and NP are perpendicular to PS, and NQ is parallel to MT and RS.

39. Which of the following is an expression for in terms of ∠RTS ?

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

RT is the hypotenuse, and TS is the adjacent side of RTS, so the cos value is needed to connect the two sides. And because RT is the reciprocal of cos than ST, so choose B.