Plz answer the question fat it's here I am sorry for the last question
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Answer no. 3
By angle sum property
X+X-20+X-40=180
3X-60=180
3X=120
X=40
Answer no.2 in part 2
2sin(63)\cos27
=2cos(90-67)/cos27
=2cos27/cos27
=2
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