Maths-
General
Easy

Question

In the following circle, ‘O’ is the centre .If C A B equals 35 to the power of ring operator end exponent text  then  end text left floor A B C equals

  1. 35°    
  2. 45°    
  3. 55°    
  4. 60°    

The correct answer is: 55°


    I n space t r i a n g l e space A C B
angle C A B space equals 35 to the power of ring operator
angle A C B space equals 90 to the power of ring operator space left parenthesis a n g l e s space f o r m e d space i n space s e m i space c i r c l e space i s space o f space 90 right parenthesis
A l s o
angle A C B plus angle C A B plus angle A B C equals 180 to the power of ring operator space left parenthesis a n g l e space s u m space p r o p e r t y right parenthesis
90 plus 35 plus angle A B C equals 180 to the power of ring operator
angle A B C equals 180 to the power of ring operator minus 125 to the power of ring operator
angle A B C equals 55 to the power of ring operator

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