Advertisements
Advertisements
प्रश्न
In ΔABC, ∠B = 90°, find ∠A if BC is equal to AВ.
बेरीज
Advertisements
उत्तर
Given: In triangle ABC, ∠B = 90° and BC = AB.
Step-wise calculation:
1. BC = AB ⇒ triangle ABC is isosceles with the equal sides at B, so ∠A = ∠C.
2. Sum of angles in a triangle:
∠A + ∠B + ∠C = 180°.
With ∠B = 90°, we get ∠A + ∠C = 90°.
3. From (1) ∠A = ∠C.
So, 2∠A = 90°
⇒ ∠A = `90^circ/2`
⇒ ∠A = 45°
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
