0 is the center of the circle. If angle acb is 30 degree then find angle abc
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Angle bac=90 (as angle substended by a semi circle is right angle)
then applying angle sum property in triangle abc, we get angle abc=60
then applying angle sum property in triangle abc, we get angle abc=60
isro48:
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AS BC A DIAMETER IT'S BOTH ENDS WILL ALWAYS MAKE RIGHT ANGLE AT CIRCUMFERENCE OF CIRCLE EXCEPT AT POINT B AND AT C.....
SO,
AS WE KNOW ∆ ABC IS A RIGHT ANGLE TRIANGLE...
/_ C = 30°
/_ A = 90°
/_A + /_ B + /_C = 180°
SO /_ B = /_ ABC = 60°
SO,
AS WE KNOW ∆ ABC IS A RIGHT ANGLE TRIANGLE...
/_ C = 30°
/_ A = 90°
/_A + /_ B + /_C = 180°
SO /_ B = /_ ABC = 60°
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