# Answer to Question #33104 in Trigonometry for Kristen Woods

Question #33104

Let tan A = 7 and tan B = 9. Which is cot A + cot B?

A. 0.06

B. 0.6

C. .126984

D. 0.25

A. 0.06

B. 0.6

C. .126984

D. 0.25

Expert's answer

cot A + cot B=1/ tan A + 1/ tan B=1/7+1/9=(7+9)/63=16/63=approximately 0.25

Thus, the correct answer is D.

Thus, the correct answer is D.

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