Asked by deborah

could someone please help.
given each set of data for ∆ABC:
a) solve for b given ∠B=88 degrees,a=31.5m,c=25.6cm
b) solve for a given ∠B=66 degrees,∠C=28 degrees,c=11.6cm
i) state whether the sine law or cosine law is required to solve the unknown value.
ii) use the law you selected in i) to solve for the unknown value, correct to one decimal place.

Answers

Answered by Reiny
Use cosines law for SSS and SAS
use sine law for others

a) cosine law
b) sine law
Answered by deborah
thank you
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