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rishi

· started a discussion

· 1 Months ago

D (Question: 368317.0 )

PLz try to give short approach fr the questions as far as the mains is concerned
ON an average paper was upto the mark@@

Question:

If tan A =  1- cos Bsin B   , then what is  2 tan A1-tan2 A    equal to?

Options:
A)

tan B2    

B)

2tanB

C)

tanB

D)

4tanB

Solution:

Ans:(c) 

  

Tushar garg

· commented

· 1 Months ago

Put B=60 solve for A and by option got answee
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