Question

Given ∆abc in which b =47° c =65° and c =12.4cm determin the length of b.

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Step-by-step explanation:

use can use law of sine here

a/sinA=b/sinB=c/sinC

so,

•b/sinB=c/sinC

•b=c/sinC×(sinB)

•b=12.4/sin65×sin47

b=12.4/0.90× 0.73

•b=10.05cm