tan 140° -- tan 130°
If tan 40° = 2 then
1 + tan 140° tan 130°
II
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Answered by
1
Answer:
tan(270)=tan(130+140)
⇒tan(180+90)=
1−tan(130).tan(140)
tan(130)+tan(140)
⇒
0
1
=
1−tan(130).tan(140)
tan(130)+tan(140)
⇒1−tan(130).tan(140)=0
⇒tan(130).tan(140)=
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Answer:
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