Prove that tan 69° + tan 66-tan 69º tan 66 = -1.
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Answer:
here some mistake is there in your question I think because tan66 + tan 69 /1-tan69 tan66 is correct question
kartik8738:
no
but yrr tan (A+B) follow hi nhi karega
ha
wahi to problem h
let's see what is correct answer
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