Question

Solve this fast anyone

Answer 1

Answer:

60 degree is the correct answer

Step-by-step explanation:

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Answer 2

Answer:

b+c+90=180°

b+c= 90

a:b=4:1

let b=1x

1x+c=90°

x=90-c

a+c= 180 (linear pair)

a = 4b (given)

so 4b+c= 180

and

b+c=90

in the options

if c= 60

then b = 30

4b=a

so,4×30=120

a+c=180

120+60=180

therefore C= 60