Q3 of 62 Page 63

cot x = , x lies in third quadrant.

Given, , x lies in 3rd quadrant

1 + cot2x = cosec2x




(∵ x lies in 3rd quadrant)


Now,



∴ sin2x + cos2x = 1








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1

cos x = –, x lies in third quadrant.

 2

sin x =, x lies in second quadrant.

 4

sec x =, x lies in fourth quadrant.

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tan x = –, x lies in second quadrant.