73. In the given figure, O is the c...
Question

# 73. In the given figure, O is the centre of the circle and ZADC= 1200. What is the value of ZAPC + ZABC? 30° A

JEE/Engineering Exams
Maths
Solution
72
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Loe lanew, ( begin{aligned} angle A D C &=angle A P C text { So, } & angle A P C+angle A B C &=60^{circ}+120=180^{circ} end{aligned} )