Q. 143.9( 20 Votes )
Find the equation
Answer :
It is given that equation of curve is x = cost, y = sint
On differentiating with respect to x, we get
Therefore, the slope of the tangent at ) is -1.
When
Then, the equation of the tangent is is
y – = -1(x –
)
⇒ x + y --
= 0
⇒ x + y - = 0
Then, slope of normal at
=
Now, equation of the normal at
y – = 1(x –
)
⇒ x = y
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