Question

IN A RIGHT ANGLED TRIANGLE A = 90 AND AB=AC WHAT ARE THE VALUESS OF ANGLE B

Answer 1

Answer:

45

Step-by-step explanation:

given

          AB = AC

   then, angle C = angle B     (angles opposite to equal sides are equal)

In triangle ABC,

       angle A+ angle B+ angle C = 180   (angle sum property of triangle)

        90 + B +C = 180   (given that angle A = 90)

         90 + B + B = 180          (as angle B = angle C)

         90 + 2B = 180

          2B = 180 - 90

            B = 90/2

               B = 45

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