Question

If ABC=45° & BAC=100° then BCA=?

Answer 1

Answer:

Let BCA= X,then ABC+BAC+X=180

45+100+X=180

x=180-(45+100)

X=180-145

X=35

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Step-by-step explanation:

Answer 2

Step-by-step explanation:

let ABC =a

BAC = b

BCA = c , So,

a+ b+ c=180°

45°+100° +c =180°

145°+c =180°

c=180°-145°

c=35°

Hence BCA =35°