Let a tangent to any curve at a point P on it cuts at N. If a & b are lenght of subtangent and subnormal then a + b equals ?
As we have learned
Concept of sub Tangent and sub Normal -
When Tangent and Normal cuts the x-axis at a point and perpendicular from point of contact to x-axis.Then this is sub Normal & Tangent.From fig TS and SN are known as sub tangent and sub normal.
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