Q4 of 118 Page 5

If sinx + cosx = 0 andx lies in the fourth quadrant, find sinx and cosx.

Given sinx + cosx = 0 andx lies in fourth quadrant.


⇒sinx = -cosx



∴ tanx = -1


In fourth quadrant, cosx and secx are positive and all other ratios are negative.


We know that










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