what is solution please fast
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I know it is not the correct way to solve that is putting the options but it is much more faster way
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morishkein:
in last cos pai.COs pi/2 please explain how
what
cos( pi)= -1 and cos (pi/2)=0
so cos (pi) × cos (pi/2) = -1×0=0
also similarly sin (pi)×sin (pi/2)=0×1=0
I thought you could understand so I didn't write that
if you liked it then mark it as brainliest answer
please I need it
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