tan60×(tan170-tan140)
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Answered by
0
may be its question answer is =1
pinaki2:
no
you have to prove that equal to 1+tan170tan140
answer kya hai.
1+tan170tan140
ok.
Answered by
3
tanA-tanB=tan(A-B)×(1+tanA×tanB)
=tan60×[tan(170-140)×(1+tan170tan140)]
=tan60[tan30×(1 + tan170tan140)]
=rt(3)×1/rt(3)×(1 + tan170tan140)
=1 + tan170 tan140
answer is 1+tan170tan140
okk
tan(a-b)=(tana-tanb)/1+tanatanb hoya hai
*hota
ha to correct hai na
ok got it
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