Find the value of X.
One more question, how to find the value of A if, cos A = -1/2
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Step-by-step explanation:
1- tan square 60/1+ tan square 60
=1-(√3)^2/1+(√3)^2
= 1-3/1+3
= -2/4
= -1/2
cos is negative in quadrant 2 and quadrant 3
cos 240
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