Question

Please answer my question fast

Answer 1

Answer:

Opinion D 10°

Explanation:

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Answer 2

Answer:

in the given figure,

     in ΔABC , ∠A + ∠B + ∠C = 180°

                       b + 30° + 90° = 180°

                         b = 180° - 120° = 60°

We can see that BCF is an line having three angles on point c

          so, ∠ACB + ∠ACD + ∠FCD = 180°

                   a + 30° + 80° = 180°

                         a = 180° - 110°

                          a = 70°

Now, a - b = 70° - 60°

                  = 10°(option D) (Ans.)

                                        Hope it helps

                            please mark as brainliest