Question

Sendo ÂB = 50. Determine CD

Answer 1

$\alpha = \frac{cd - ab}{2} \\ \\ 30 = \frac{cd - 50}{2} \\ \\ 2 \times 30 = cd - 50 \\ \\ 60 = cd - 50 \\ \\ 60 + 50 = cd \\ \\ 110 = cd$


ČD = 110°