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-BARSIC- [3]
3 years ago
8

2cos(2x/3 - pi/4) - căn 3 = 0

Mathematics
1 answer:
pshichka [43]3 years ago
3 0

<em>2cos(2x/3+pi/4)-square2=0 </em>

<em> </em>

<em>cos(2x/3+pi/4)=radical2/2 </em>

<em>cos(2x/3+Pi/4)=cos pi/4 </em>

<em>2x/3+pi/4=pi/4+k2pi or 2x/3+pi/4 =-pi/4+ </em>

<em>k2pi X=K3pi or x=-3pi/4 + k3pi</em>

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natali 33 [55]

Answer:

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  4. Whatever you do to the denominator you have to do to the numerator, so you also have to multiply the numerator of 7/8 by 3 and the numerator of 1/6 by 4
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  7. Because 28/24 is more than the whole, subtract 28 from 24 which gives us 4. That 4 is now our new numerator
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gizmo_the_mogwai [7]
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\huge\boxed{Exterior\ angle = 70\°}

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So,

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