Question

tan 91 -tan pointssssssssssssssssssssss

Answer 1

Answer:

tan 91-tan 1

tan90

value of tan 90 is not defined

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Answer 2

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)