Question

Please help me it’s so important :(((

Answer 1

C,D and F are all true

Answer 2

C, D and F are true

Explanation:

The DCB triangle is isosceles, so it means the angles D and B are the same and as the angle C is 90°, B and C need to be 45° (because the sum of the internal angles of a triangle is always 180°). The sin(B) = sin(C) = sqrt2/2 and the tan(B) = tan(C) = 1