The Total solution for NCERT class 6-12
ABC is a right angled triangle in which тИаA = 90┬║ and AB = AC. Find тИаB and тИаC.
It is given that
AB = AC
тЗТ тИаC = тИаB (Angles opposite to equal sides are also equal)
In ╬ФABC,
тИаA + тИаB + тИаC = 180┬║ (Angle sum property of a triangle)
тЗТ 90┬║ + тИаB + тИаC = 180┬║
тЗТ 90┬║ + тИаB + тИаB = 180┬║
тЗТ 2 тИаB = 90┬║
тЗТ тИаB = 45┬║
тИ┤ тИаB = тИаC = 45┬║