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ozzi
3 years ago
15

Sin(x+y)-sin(x-y)/cos(x+y)+cos(x-y)=tany how do i verify this?

Mathematics
1 answer:
dsp733 years ago
7 0

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

y

cos

y

and  

sin

y

cos

y

=

tan

y

=

right side hence proved

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Answer:

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Step-by-step explanation:

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There are three (3) types of taxation used by the government, these are;

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5 0
3 years ago
Read 2 more answers
Find the measure of the numbered angle.
Mila [183]
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4 0
3 years ago
Evaluate 4 - 2(a2 – b2)2 when a = 3 and b = 2.
Anton [14]

Answer:

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Step-by-step explanation:

4 - 2(a^2 – b^2)^2 =

= 4 - 2(3^2 – 2^2)^2

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3 years ago
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AlladinOne [14]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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PLEASE HELP!!!!!!!!!!
kobusy [5.1K]
73 feet per second

Steps-
Miles to cover- 50 miles = 50*5280 feet = 264,000 feet
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