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OpenStudy (anonymous):
What is the value of x? 5sqrt2 10sqrt2 5 10
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OpenStudy (anonymous):
jhonyy9 (jhonyy9):
cos45 = x/10 do you know the value of cos45 ?
jhonyy9 (jhonyy9):
cos45 = sqrt2 /2 can you calculi now the x ?
jhonyy9 (jhonyy9):
write sqrt2 x ---- = ----- 2 10 cross multiplie and will get for x = ?
jhonyy9 (jhonyy9):
cross multiplie 10sqrt2 = 2x divide both sides by 2 5sqrt2 = x ok ?
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OpenStudy (anonymous):
7.07106781187?
jhonyy9 (jhonyy9):
yes but in these choises there is 5sqrt2
OpenStudy (anonymous):
ok. thanks again :)
jhonyy9 (jhonyy9):
yw
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