Question

In a Right Angled Triangle ABC where angle A= 90° and AB=AC. What is measure of angle B ? OR If two adjacent angles on a straight line are in the ratio 1 : 3, find the measure of Smaller angle. ​

Answer 1

Answer:

90 + 1x + 2x =180

90 + 3x =180

3x = 180 -90

3x = 90

x = 90/ 3 = 30

so 1x = 1×30 = 30

2x = 2 × 30 = 60