2 years ago

Please answer asap please

Mathematics

1 answer:

mash [69]2 years ago

5 0

Answer:

20°

Step-by-step explanation:

ΔCAD

BD=CD

∠BCD=50°, ∠BAD= 30°, x= ?

------------

BD=CD ⇒ ∠CBD= ∠BCD= 50° ⇒ ∠BDC= 180°- 50°×2= 80°

∠ADC= 180° - (50°+30°)= 100°

x= ∠ADC - ∠BDC= 100° - 80°= 20°

x= 20°

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