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anonymous
 one year ago
help lease
anonymous
 one year ago
help lease

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you know law of cosine?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0i'm trying to use the equation editor but failing...

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0the cosine rule when applied here is 2^2 = 3^2 + 4^2  2.3.4 cos theta

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0so you now need to solve for 2.3.4 cos theta

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0well use the rules of algebra

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0subtract 3^2 + 4^2 from both sides then multiply through by 1

welshfella
 one year ago
Best ResponseYou've already chosen the best response.02^2  3^2  4^2 = 3^2 + 4^2  3^2  4^2  2.3.4 cos theta so the 3^2 and 4^2 disappear from the right side

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0can you continue? No its not 24

welshfella
 one year ago
Best ResponseYou've already chosen the best response.021 =  2.3.4 cos theta multiply both sides by 1 21 = 2.3.4 cos theta

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0the cosine rule is used if you know 2sides of a triangle and included angle or 3 sides and you require on of the angles. It can be applied to all triangles.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435914229839:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0c^2 = a^2 + b^2  2ab cos C

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh i see thnx..again
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