A tangent is drawn to circle from a point 2.6 cm apart from its centre. The length of tangent is 2.4 cm then its diameter is _____
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2cm ANSWER
FROM LINE CENTRE IT FORMS HYPOTENUSE
RADIUS WHICH IS PERPENDICULAR TO THE OTHER SIDE
TANGENT=2.4
LINE DRAWN FROM CENTRE IS 2.6CM
BY USING PYTHAGORAS THEOREM
(RADIUS)^2 + (TANGENT)^2 =( LINE FROM CENTRE)^2
RADIUS ^2 + 2.4^2 =2.6^2
RADIUS^2 + 5.76 = 6.76
RADIUS^2=6.76-5.76
RADIUS^2=1.00
RADIUS = ROOT OF 1
RADIUS =1cm
DIAMETER = 2×RADIUS=2×1=2CM
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