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scoray [572]
3 years ago
9

50 sin2 x = 50 + 25 cos x

Mathematics
2 answers:
densk [106]3 years ago
6 0

Answer:

Step-by-step explanation:

divide by 25

2sin²x=2+cos x

sin²x+cos²x=1

sin²x=1-cos²x

2(1-cos²x)=2+cos x

2-2  cos²x=2+cos x

2cos²x+cos x=0

cos x(2 cos x+1)=0

cos x=0,

x=(2n+1)π/2

where n is an integer.

or

2cos x+1=0

cos x=-1/2=-cos π/3=cos (π-π/3),cos(π+π/3)=cos (2nπ+2π/3),cos (2nπ+4π/3)

x=(3n+1)2π/3,(3n+2)2π/3

where n is an integer.

AleksandrR [38]3 years ago
5 0

Step-by-step explanation:

there my duuuuuuuuuuuuuuuude

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irina1246 [14]

The area is the product of length and width.

.. area = length * width

.. 61 5/8 = (7 +7 1/2) * width

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A calculator that works with fractions figures this nicely. By hand, you might compute it as

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If sin(x) = 1/2, what is cos(x) and tan(x)? Explain in full sentences
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stanley has $1.60 in pennies, dimes, and quarters. he has 5 times as many pennies as he has quarters. he has 25 coins total. how
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Answer:

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Step-by-step explanation:

5 times as many pennies as quarters would mean quarters x 5 equals pennies

3 quarters

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You have to keep coming up with possible solutions to get the right one.

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