Answers

2014-04-09T21:54:53+05:30
The value of angle ABC=90-55=35
so the value of  angle BAD is 90-35=55
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2014-04-09T22:12:16+05:30
First the ΔABC is a right angled triangle as the angle BAC is a 90⁰
now, in ΔABC angle A= 90⁰-------------(GIVEN)
angle C= 55⁰----------------------------------(GIVEN)
therefore, angle B= (angle A - angle B)-----(REMAINING ANGLES)
               angle B=(90-55)
               angle B=35------------------(1)
now in ΔBDA
      in ΔBDA, angle D=90⁰---------------(GIVEN)
             also, angle B=35⁰--------------(FROM 1)
therefore,angle A=(angle D-angle B)-------(REMAINING ANGLES)
             angle A=(90-35)
             angle A=55
therefor, angle A=55⁰.
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