Question 77

A chord of a circle is equal to its radius. The angle subtended by this chord at a point on the circumference is

Solution

length of chord = length of radius

equilateral triangle is formed

angle at the centre = 60 $$\degree$$

angle subtended by chord at centre = 2 angle subtented by chord at the circumferece of circle

angle subtented by chord at the circumferece of circle = 30 $$\degree$$

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