Answer Posted / anonymus
Sin(0)=0.So, Cos(90)=0.
We Know Sin^2 (x)+ Cos^2 (x)= 1.
Applying this, at x= 90,we get sin(90)=(+-)1.
But Sin(90)>0.So Sin(90)= 1.
| Is This Answer Correct ? | 6 Yes | 12 No |
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