A+B+C=90 solve tan A. tan B + tan B. tan C + tan C.tan A=1
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Answered by
1
Answer:
proved
Step-by-step explanation:
A+B+C=90
tan ( A+B) = tan ( 90 -C) = 1/tanC
1/tanC = tanA + tanB ÷ 1 - tanAtanB
tanC ( tanA + tanB) = 1 - tanAtanB
tan A. tan B + tan B. tan C + tan C.tan A = 1
Answered by
1
Answer:
thankyou
Step-by-step explanation:
because of your 5 points l got by suml
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