MPSC Rajyaseva 2020 CSAT — Question 60

Enlarge

सोबतची एकमेकांवर आलेले समभुज त्रिकोण दाखवणारी आकृती अभ्यासिया आणि कोन a ची अंशांत किंमत निवडा. / Study the accompanying figure showing overlapping equilateral triangles and select the value of angle a in degrees.

Using the geometric properties of overlapping equilateral triangles, interior angle sums and exterior angle theorems are applied to find angle a, which evaluates to 49 degrees.