in the given figure O is the centre of the circle angle abc is equal to 40 then find the value of a + b + c
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In the figure, you see (180 - 2x) + y = 180 (straight angle) so 2x = y
Also, the moment you see the circle and its two radii, mark them equal and the corresponding angles equal. (the red angle = blue angle)
x + 180 - 2y = y
5x = 180 (from above, y = 2x)
x = 36
Also, the moment you see the circle and its two radii, mark them equal and the corresponding angles equal. (the red angle = blue angle)
x + 180 - 2y = y
5x = 180 (from above, y = 2x)
x = 36
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