If A+B+C = pie cotAcotB + cotBcotC + cotCcotA = 1 prove it

Asked by rekkakr1095 | 9th Nov, 2010, 09:22: PM

Expert Answer:

Dear Student
Please check the signs in the question you have posted
cotAcotB + cotBcotC + cotCcotA = 1
 Highlighted plus signs must be minus
here is the solution

Answered by  | 10th Nov, 2010, 09:23: AM

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