misshshareef07pdipd6 misshshareef07pdipd6

09-02-2019
Mathematics

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Someone help me in 4th question plz

Someone help me in 4th question plz class=

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Arijit004 Arijit004

09-02-2019

So we should basically add 70,80,m+10

=70+80+m+10=180(PQR is a straight line)
=150+m+10=180
=m+10=180-150
=m+10=30
=m=30-10
Therefore m=20degrees

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