Question

which is greater sin40° or cos40° ?? explain

Answer 1

cos 40 is greater than Singh what is the reason is that if you see the graph of both sin x and cos x you will see that the value of sin x increase in zero to 90 and that of course X decreas in zero to 90 they both have the same value at 45 and after that sin x leaves over core x

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Answer 2

Cos 40 is greater than sin 40

See if we go 0 to 90 sin values

0°=0
30=1/2
45=1/root 2
60=root 3/2
90=1
If u see from zero to 90 sin values are increasing
But if u see cos 0 to 90 it's value decreases
Or sin 0 =cos 90
Sin30=cos60
Similarly all
So cos 40=.766
Sin40=.643