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Mathematics 7 Online
OpenStudy (anonymous):

How to find x..

OpenStudy (anonymous):

cos rule

OpenStudy (anonymous):

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OpenStudy (anonymous):

\[x^2=5^2+5^2-2(5)(5)\cos(30)\]

OpenStudy (anonymous):

i mean angle 60

OpenStudy (lgbasallote):

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OpenStudy (anonymous):

I mean the value of x.. :D

OpenStudy (anonymous):

@lgbasallote found the x its on the diagram opposite 60

OpenStudy (anonymous):

\[x^2=50-50\cos 60\]

jhonyy9 (jhonyy9):

@Miyuru how do you think if this angle formed by two equales sides has a measure of 60 degree what will be the lenght of 3rd side and what is the measure of these two angles ?

OpenStudy (anonymous):

\[x^2=50-50(1/2)=25\]

OpenStudy (anonymous):

\[x \rightarrow5\] since this is equilateral

jhonyy9 (jhonyy9):

hope so much that you can deducting this vera vera easy

OpenStudy (anonymous):

lets say angle was 30

OpenStudy (anonymous):

Ohh yeah.. forgot.. :)

jhonyy9 (jhonyy9):

not vera i wann say very

OpenStudy (anonymous):

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