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Please help out explanation need it

Please help out explanation need it-example-1
User Geoaxis
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1 Answer

5 votes

Answer:

SinA= BC/AC=20/55

SinA=4/11

A=Sin^-1(4/11)

A=Sin^-1(0.36)

LA=21.1 ← ans

OAmalOHopeO

User Zev Spitz
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