Cotb.cotc. +cotc.cota. +cota.cotb. =1
Answers
Answered by
127
A + B = 180-C
take tan of both sides
(tan A + tan B)/(1-tan A tan B) = - tan C
or tan A + tan B + tan C = tan A tan B tan C
deviding both sides by Tan A tan B tan C
we get 1/tan B 1/ tan C + 1/tan A 1/ tan C + 1/ tan A 1/tan B = 1
or cot B cot C+ cot A cot C + cot A cot B = 1
take tan of both sides
(tan A + tan B)/(1-tan A tan B) = - tan C
or tan A + tan B + tan C = tan A tan B tan C
deviding both sides by Tan A tan B tan C
we get 1/tan B 1/ tan C + 1/tan A 1/ tan C + 1/ tan A 1/tan B = 1
or cot B cot C+ cot A cot C + cot A cot B = 1
Answered by
21
Answer:
Step-by-step explanation:
Attachments:
Similar questions