SSC CHSL 2020 PYQ — Question 53

SSC CHSL - 15th October 2020 - Shift 1 • Quantitative Aptitude • Q53

In a ΔABC, ∠ABC = 2∠CAB , if the side BC is extended to D and ∠ACD = 126o , the ∠CAB is:

Show answer & explanation

Correct answer: C

Explanation

The correct answer is option 3 i.e 42o

Understanding

Tricks

Application

According to figure

x + 2x = 126 exterior angle

So

3x = 126

x = 42

Hence 

∠CAB = 42