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JYOTI CHOUHAN

· started a discussion

· 1 Months ago

Wrong showing answer (Question:368336.0)

Solution don't match with key

Question:

If a cot θ + b cosec θ = x2 and b cot θ + a cosec θ = y2 then the value of (a2 – b2) is–

Options:
A)

1

B)

x4 – y4

C)

y4 – x4

D)

0

Solution:

Ans:(c)

   

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