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satela [25.4K]
3 years ago
12

PLEASE PLEASE I'm begging you for help I need this grade up in like 15 min like I'm so tired I stayed up working on this and I h

ad to wake up early too

Mathematics
1 answer:
Karolina [17]3 years ago
8 0
The formula, the area for the circles, the semicircles, the area for the quarter circles, and the total area

A for circles=1571
A for semicircles=1571
A for quarter circles=7854
A for all circles= 10995.98

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Answer?? Please thxs
Lady bird [3.3K]
3/7 - 1/7 = 2/7

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6/7 divided (-13/5) = ??
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- 30/91

Step-by-step explanation:

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Olenka [21]

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Step-by-step explanation:

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3 years ago
Sin(x+y)-sin(x-y)/cos(x+y)+cos(x-y)=tany<br> how do i verify this?
dsp73

Answer:

Step-by-step explanation:

Numerator

sin

x

cos

y

+

cos

x

sin

y

−

[

sin

x

cos

y

−

cos

x

sin

y

)

=

sin

x

cos

y

+

cos

x

sin

y

−

sin

x

cos

y

+

cos

x

sin

y

=

2

cos

x

sin

y

Denominator

cos

x

cos

y

−

sin

x

sin

y

+

cos

x

cos

y

+

sin

x

sin

y

=

cos

x

cos

y

−

sin

x

sin

y

+

cos

x

cos

y

+

sin

x

sin

y

=

2

cos

x

cos

y

---------------------------------------------------------------

left side can now be expressed as

2

cos

x

sin

y

2

cos

x

cos

y

=

2

cos

x

sin

y

2

cos

x

cos

y

=

sin

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cos

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and  

sin

y

cos

y

=

tan

y

=

right side hence proved

7 0
3 years ago
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