sinx+siny+sinz=-3 prove that cosx+ cosy+cosz=0
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To get answer -3
X y and z all should be equal to 180 degree
Because sin range is -1to1
Now put X y z as 180 in cos equation
Cos 180 is zero
Therefore answer is zero
X y and z all should be equal to 180 degree
Because sin range is -1to1
Now put X y z as 180 in cos equation
Cos 180 is zero
Therefore answer is zero
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