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What is the length of the side f? We have a triangle with sides d,e,f and angles D,E,F...

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paulbarton | Honors

Posted November 6, 2012 at 12:35 AM via web

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What is the length of the side f?

We have a triangle with sides d,e,f and angles D,E,F

(D,d) = (36`^@` ,62)

(E,e) = (42`^@` ,71)

(F,f) = (102`^@` ,f)

 

 

 

 

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mathsworkmusic | (Level 3) Associate Educator

Posted November 6, 2012 at 10:23 AM (Answer #1)

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Using the sine rule

`sinF/(f) = sinD/d = sinE/e = sin(36)/62 = 0.0095`

`therefore` `f = sinF/0.0095 = sin102/0.0095 = 103.0`

The length of f is 103.0

 

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