What is the tangent equation of a point m (- 3,4) over a circle X & # 178; + Y & # 178; = 25

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• 1. The tangent equation of a (2,1) - direction circle x ^ 2 + y ^ 2 = 4 is rt
• 2. The tangent line passing through a circle x ^ 2 + y ^ 2 = 4 and a point P (2,1) leading to the circle is obtained
• 3. The tangent equation of a (2,4) - direction circle X & # 178; + Y & # 178; = 4 is
• 4. Calculate the determinant 1 1 2 3 1 2 3 - 1 3 - 1 - 1 - 2 2 3 - 1 - 1
• 5. "Circle x + y + DX + ey + F = 0 (d ^ 2 + e ^ 2-4f > 0) is symmetric with respect to the line y = X-1" means that the center of the circle is symmetric with respect to the line?
• 6. Tangent equation of a point a (2,4) on the outside of a circle x ^ 2 + y ^ 2 = 4 Using the formula of distance from point to line d = 2, K can't be solved
• 7. General term and summation of sequence Given that the first n terms and Sn of sequence {an} satisfy an + 2snsn-1 = 0, (n is greater than or equal to 2), A1 = 1 / 2, find an
• 8. If three points a (2,2) B (a, 0) C (0, b) (AB is not equal to 0) are collinear, we prove that 1 / A + 1 / b = 1 / 2
• 9. What's the quotient of four fifths of 4.5 minus 1.5 divided by 2.1? The difference between eight percent of 250 and three times of a number is exactly 3.2 What's the quotient of 4.5 minus 1.5 divided by 2.1? The difference between 8% of 250 and 3 times of a number is exactly 3.2?
• 10. The number of divisors of a number is______ Of which the smallest divisor is______ The greatest divisor is______ ．
• 11. Through the point (2, - 3) to the circle (x-1) & # 178; + (y + 3) & # 178; = 1, the tangent line is introduced and the tangent equation is solved
• 12. Find the tangent equation of point a [2,4] and tangent to circle C: [x-3] &# 178; + [Y-2] &# 178; = 1
• 13. Through point a (4, - 3), make the tangent of circle C (x-3) &# 178; + (Y-1) &# 178; = 1, and find the formula of this tangent Through point a (4, - 3), make the tangent of circle C (x-3) &# 178; + (Y-1) &# 178; = 1, and find the equation of the tangent
• 14. Find the tangent equation of the circle X & # 178; + Y & # 178; = 4 passing through point (3,0)
• 15. The tangent equation of a circle whose point passes through a point P (- 4, - 3) on the circle X & # 178; + Y & # 178; = 25 is
• 16. The tangent equation of a point P (- - 3,4) over a circle X & # 178; + Y & # 178; = 25 is I found that my answer is different from the answer. I don't know which one is wrong. So I need a process answer, please
• 17. The equation for finding the tangent line of the circle X & # 178; + Y & # 178; = 25 in the direction of point a (5,15)
• 18. It is known that the equation of circle C is (x-1) 2 + (Y-1) 2 = 1, and the coordinates of point P are (2,3). The tangent equation and tangent length of the circle with point P are obtained
• 19. Given the equation of the circle and the coordinates of P point, find the tangent equation of the circle passing through P point. (1) (x + 2) 2 + (Y-3) 2 = 13, P (1,5); (2) x2 + y2 = 9, P (3,4)
• 20. Given that the equation of circle is (x-1) + (Y-1) = 1, the coordinates of point P are (2,3), the tangent equation of point P is obtained urgent