Question

9. In an isosceles triangle ABC right angled at B, then :​

Answer 1

Answer:

1

Step-by-step explanation:

as the triangle ABC right angled at B then we have ,

angle A = 45 degree

angle B =90 degree

angle C = 45 degree

so sin square A +cos square C = sin square 45+ cos square 45=1

using the identity sin square x + cos square x =1