SSC CHSL 20 Dec 2015 Shift 2 Paper

Question : 119 of 200

Marks: +1, -0

In ∆ABC, O is the orthocentre and ∠BOC = 80°, the measure of ∠BAC is

Solution:

Given :

∠\BOC=80°

To find : ∠BAC = ?
Solution : In case of orthocentre, we have :
∠ BOC + ∠BAC =180°
⇒ 80° + ∠BAC = 180°
⇒ ∠BAC = 180 - 80 = 100°

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