Question

Can someone please help me with this​

Answer 1

x= 10°

Explanation:

∡BDC +∡BCD= ∡CBS (ext. ∡= sum of int. opp. ∡s)

80° + 4x-5° = 15° +10x

80° -5° -15°= 10x -4x

60° = 6x

6x =60°

x= 60° ÷6

x= 10°