RRB Junior Engineer Stage 1 Model Papers 8

Question : 2 of 100

Marks: +1, -0

In ∆ABC, ∠B = 60°, and ∠C = 40°; AD and AE are respectively the bisector of ∠A and perpendicular on BC. The measure of ∠EAD is :

Solution:

In ∆ ABC

∠Α = 180°− (60° + 40°) = 80°

∠BAD = ∠DAC = 40°

(AD is bisector of ∠A)
In ∠AEC

∠EAC = 180° – (90° + 40°) = 50°

So, ∠EAD = ∠EAC – ∠DAC

= 50° – 40°

∠EAD = 10°

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