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nadya68 [22]
3 years ago
14

PLEASE HELP WORTH 50 POINTS

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0

Answer:cos( A + B ) = cosAcosB - sinAsinB ;

cos( A + B ) / ( cosAsinB ) = ( cosAcosB - sinAsinB ) / ( cosAsinB ) = ( cosAcosB ) / ( cosAsinB ) - ( sinAsinB ) / ( cosAsinB ) = cosB / sinB - sinA / cosA = cotB - tanA ;

                     

tan²(x) - sin²(x) = sin²(x)/cos²(x) - sin²(x)

… = sin²(x) (1/cos²(x) - 1)

… = sin²(x) (sec²(x) - 1)

… = sin²(x) tan²(x)

Step-by-step explanation:

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Solve the equation <br> 8x-4=2(4x-4)
Bad White [126]

Answer:

Distribute

8

−

4

=

2

(

4

−

4

)

8x-4={\color{#c92786}{2(4x-4)}}

8x−4=2(4x−4)

8

−

4

=

8

−

8

8x-4={\color{#c92786}{8x-8}}

8x−4=8x−8

2

Add

4

4

4

to both sides of the equation

8

−

4

=

8

−

8

8x-4=8x-8

8x−4=8x−8

8

−

4

+

4

=

8

−

8

+

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8x-4+{\color{#c92786}{4}}=8x-8+{\color{#c92786}{4}}

8x−4+4=8x−8+4

3

Simplify

Add the numbers

Add the numbers

8

=

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−

4

8x=8x-4

8x=8x−4

2 more steps

Result

0

=

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0=-4

0=−4

The input is a contradiction: it has no solutions

4 0
3 years ago
Hi can someone help me find domain and range
dezoksy [38]

Answer:

Step-by-step explanation:

Domain is ( - ∞ , ∞ )

Range is [ 0 , 1 ] ∪ ( 2 , ∞ )

8 0
2 years ago
In a manufacturing process, the assembly line speed (feet per minute) is believed to affect the number of defective parts found
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5 0
3 years ago
Find the missing length indicated. <br> Your answer
Naddika [18.5K]

Answer:

x = 12

Step-by-step explanation:

For the middle size triangle

short leg = x

long leg = (25 - 9) = 16

ratio = x/16

For the small triangle

short leg = 9

long leg = x

ratio = 9/x

Similar triangles are proportional so

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6 0
3 years ago
What is the value of X equal?
nikdorinn [45]

Answer:

113º

Step-by-step explanation:

(x + 14) + (180 - 83) + x + 90 + x = 540

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3x = 339

x = 113

7 0
3 years ago
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