Question

fet D 4cm 30° A O B 30° 4cm C A th 400 50° lo B D С​

Answer 1

answer is

angle AOC=angle BOD=60⁰

Step-by-step explanation:

d.

In triangle ACD

<A+<B+<C=180⁰

40⁰+<c+90⁰=180⁰

<c=180-130

<c=50⁰

<c=<B=50⁰