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Anestetic [448]
3 years ago
8

Write each expression in terms of sines and/or cosines and then simplify.

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0
Tan(x)= sin(x)/cos(x), therefore, substitute sin(x)/cos(x) in the expression:
=(cos(x)(sin(x)/cos(x))-1)/cos^2(x)
simplify the 2 cos(x):
=(sin(x)-1)/cos^2(x)
Sin^2(x)+ cos^2(x)=1, sin^2(x)-1=- cos^2(x), substitute in the expression:
= -cos^2(x)/cos^2(x)= -1
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What is the value of 36X negative Y over to when X equals three and Y equals -6
Rus_ich [418]

<u><em>Note:</em></u>

<em>Your question is a little unclear. But, from my understanding, I assume you may be asking the evaluation of the expression 36x - y when x = 3 and y = -6.</em>

<em>so I will solve based on my assumption which anyways would clear your concept.</em>

Answer:

The value of 36x - y when x = 3 and y = -6 will be: 114

Step-by-step explanation:

Given

Assuming the expression

36x - y

To Determine

Evaluate 36x - y when x = 3 and y = -6

Given the expression

36x - y

substitute x = 3 and y = -6 to evaluate the expression

36x-y= 36(3) - (-6)

            = 108+6

            = 114

Therefore, the value of 36x - y when x = 3 and y = -6 will be: 114

5 0
3 years ago
Is 6.78778777 irrational?
Monica [59]
No its not because its a repeating decimal for a number to be a irrational number it has to be non terminating or non repeating
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3 years ago
The figure below shows a line graph and two shaded triangles that are similar:
VLD [36.1K]
Every time the y-value decreases by 1, the x-value increases by 2, so the slope is -1/2 throughout the line.
4 0
3 years ago
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What should be the right answer for this question
xxTIMURxx [149]

Answer:

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Step-by-step explanation:

cb is the same length bisector ac, so the answer is <u>3 cm</u>

3 0
3 years ago
Use an area model to show the product of 8x2.23 write your answer in standard form answer
mixas84 [53]

Answer:

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Step-by-step explanation:

2.23

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17.84

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2 years ago
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