Answers

2014-07-27T12:16:13+08:00
Example:
 How long is side "c" ... ?
 


We know angle C = 37º, a = 8 and b = 11

The Law of Cosines says:   c2 = a2 + b2 - 2ab cos(C)      

Put in the values we know:   c2 = 82 + 112 - 2 × 8 × 11 × cos(37º)      

Do some calculations:   c2 = 64 + 121 - 176 × 0.798…
     

Which gives us:   c2 = 44.44...
     

Take the square root:   c = √44.44 = 6.67 (to 2 decimal places)


Answer: c = 6.67




~ That's all .. ^^
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two sides and included angle
or three sides are given
like this a= 3 ; b=4 ; c;5
2014-07-27T12:17:32+08:00
Mang pedro buy 1 kl of mango howmany vmango

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