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Shivam Purohit

· started a discussion

· 1 Months ago

correction (Question: 223898.0 )

ans is a please correct it.

Question:
If \(\cfrac{tan A}{1 -cot A} + \cfrac{cot A}{1 -tan A}\)    =  K + tan A +  cot A, then K =?
Options:
A) -1
B) 0
C) 1
D) 2
Solution:
Ans: (c)


Knowledge Expert

· commented

· 1 Months ago

Dear Student,

-1 is the correct answer.

See the step:

k(1-cotA)=cotA - 1
k(1-cotA)=-1(1-cotA)
(1-cotA) will get cancelled, we get
k=-1

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