Question #8ffd3

1 Answer
Sep 3, 2017

cosecx -= 1/sinx

Now, sin^2x + cos^2x -= 1

i.e. sin^2x -= 1 - cos^2x

=> sin^2x = 1 - p^2

so, sinx = +-sqrt(1 - p^2)

As x is in quadrant IV, sinx is negative

Hence, sinx = -sqrt(1 - p^2)

Then, cosecx = -1/sqrt(1 - p^2)

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