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Answered by
5
Answer:
tan 91-tan 1
tan90
value of tan 90 is not defined
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Answered by
14
Answer:
we know that
tana - tanb
= sina/cosa - sinb/cosb
= (sina*cosb - cosa*sinb)/cosa*cosb
= sin(a-b)/cosa*cosb
here a = 91 , b = not given , assume 1
so,
tan91-tan1
= sin(91-1)/cos91*cos1
= sin90/(-sin1)*cos1
= -1/sin1*cos1 (Ans)
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