The square of the length of the tangent drawn from the point $(\alpha, \beta)$ to the circle $ax^2 + ay^2 = r^2$ is
- A$a\alpha^2 + a\beta^2 - r^2$
- B$\alpha^2 + \beta^2 - \frac{r^2}{a}$
- C$\alpha^2 + \beta^2 + \frac{r^2}{a}$
- D$\alpha^2 + \beta^2 - r^2$
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Similar Questions
Consider the following statements:
Assertion $(A)$: The circle $x^2 + y^2 = 1$ has exactly two tangents parallel to the $x$-axis.
Reason $(R)$: $\frac{dy}{dx} = 0$ on the circle exactly at the points $(0, \pm 1)$.
Of these statements:
Assertion $(A)$: The circle $x^2 + y^2 = 1$ has exactly two tangents parallel to the $x$-axis.
Reason $(R)$: $\frac{dy}{dx} = 0$ on the circle exactly at the points $(0, \pm 1)$.
Of these statements:
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