02-07-2021
Mathematics

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Find the size of each of the unknown angles. Help me plz

Find the size of each of the unknown angles Help me plz class=

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ashishgrg402 ashishgrg402

02-07-2021

Answer:

2a+15 = 125(being alternate angle)

or,2a = 125-15

or,2a = 110

or,a = 110÷2

,a = 55

again,2a+15+b+30=180(Being co-interior angle)

or,2×55+15+b+30=180

or,110+15+30+b=180

or,155+b=180

or,b=180-155

Therfore,b=25

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