Math, asked by ananyamadan02, 1 year ago

an65+tan70/1-tan 65 tan 70=-1

Answers

Answered by shpriyanshu

1

LHS

tan65 +tan 70 /1-tan65 tan70

;tan(65+70)

;tan135

;tan(90+45)

;(-tan45)

;-1=RHS

proved

Answered by pratikkumarsubudhi

1

tanA+tanB/1-tanA.tnB=tan(A+B)
tan65+tan70/1-tan65.tan70=tan 135=-1

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