March 24, 2017

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Posted by on Thursday, March 25, 2010 at 11:05am.

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.

  • math - , Thursday, March 25, 2010 at 11:21am

    Use cosines law for SSS and SAS
    use sine law for others

    a) cosine law
    b) sine law

  • math - , Thursday, March 25, 2010 at 12:47pm

    thank you

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