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OpenStudy (anonymous):
Find the length of a Question in picture attached..
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OpenStudy (anonymous):
OpenStudy (anonymous):
using cosine formula a^2 = 15^2 +12^2 12(15)(12)cos(110)
OpenStudy (anonymous):
a^2=492.13 a=22.184
OpenStudy (anonymous):
how do you know to use cosine?
OpenStudy (anonymous):
using the given diagram we come to know we have to apply cosine formula for this
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OpenStudy (anonymous):
yes, but how?
OpenStudy (anonymous):
using this diagram
OpenStudy (anonymous):
so for all problems set up this way you use cosine?
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