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In a DeltaABC, side BC is produced to D....

In a `DeltaABC`, side BC is produced to D. If `angleABC=50^(@)andangleACD=110^(@)" then "angleA=?`

A

`160^(@)`

B

`60^(@)`

C

`80^(@)`

D

`30^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
Ext. `angleACD=angleBAC+angleABCimpliesx+50=110impliesx=60`.
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