Question

find the value of x and I want step by step explanation​.please

Answer 1

∠OBC=20

therefore

∠OCB=20   (given they are equal)

∠ACO=25

∠ABC=25+20=45

∠ACO=∠OCA=25  (given they are equal)

Let ∠OAB=∠OBA=x    (given the two are equal)

we know that the sum of that angles of a triangle is 180.

Therefore

∠ABC+∠BCA+∠CAB=180

∠OAB+∠OBA+∠OBC+∠OCB+∠OCA+∠OAC=180

x+x+20+20+25+25=180

2x=90

x=45

Hope this helps

Answer 2

Your answer is in the above attached attachment..!

Hope it helps