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Please help me it’s so important :(((

Please Help Me Its So Important class=

Sagot :

Answer:

C, D and F are true

Step-by-step 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

C,D and F are all true