Emaths All about Mathematics

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RADIUS AND CENTRE OF CIRCLE

If the equation of circle is Then center is and radius                   Or If the equation of circle is  By completing square,                                                         Example1: Find the centre and radius of the circle Solution:...

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ANGLE BETWEEN TWO LINES

Consider two lines: and , where , Angle between both lines are . Taking tan both sides,     Example Find the angle between the lines.   Solution The equation is written as follows:...

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AREA OF A TRIANGLE

Consider a triangle as shown below: The most common formula to find the area of the triangle is. In any triangle, the area of the triangle is given by Where, b is the length...

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SECTION FORMULA

1. Internal division Consider a point P(x, y) divides the line segment joining A(x1, y1) and B(x2, y2) in the ratio m : n. Draw   The coordinates of point P are   Example:...