Q21 of 118 Page 5

Mark the correct alternative in the following:

If , then tan x =


Let cosec x =a, cot x = b


∴ According to the question



But, cosec2x –cot2x =1


⇒ a2 – b2 = 1


⇒ (a-b)(a + b) = 1




a + b =11/2 …(1)


a-b =2/11 …(2)


Adding (1) and (2)







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