Using the sine rule - Benjamin-Mills
Using the sine rule - Benjamin-Mills
Using the sine rule - Benjamin-Mills
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Step 4: Rearrange <strong>the</strong> <strong>sine</strong> <strong>rule</strong> to make b <strong>the</strong> subject<br />
sin81°<br />
10<br />
=<br />
10<br />
sin81° =<br />
sin 43°<br />
b<br />
b<br />
sin 43°<br />
!<br />
sin 43°<br />
"<br />
#<br />
10 $<br />
sin81° %<br />
& = b<br />
10sin 43°<br />
sin81°<br />
= b<br />
Step 5: Calculate <strong>the</strong> value of b<br />
10sin 43°<br />
sin81°<br />
=<br />
10 ! 0.682<br />
0.988<br />
The length of side b is <strong>the</strong>refore<br />
b = 6.9<br />
= 6.82<br />
0.988 = 6.9 = b
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