For the curve y = 3 sin cos , x= sin , , the tangent is parallel to x-axis when is :
As we learnt in
Slope of a line -
If is the angle at which a straight line is inclined to a positive direction of x-axis, then the slope is defined by
.
- wherein
y =
For tangent to be parellel to x-axis, slope = 0
Option 1)
This is incorrect
Option 2)
This is incorrect
Option 3)
This is correct
Option 4)
This is incorrect
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