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GrogVix [38]
3 years ago
14

Please help me i need help please

Mathematics
1 answer:
Oksanka [162]3 years ago
4 0
90-70= 20
angle 4= 20
90-50= 40
angle 6= 40
90-15= 75
angle 8= 75
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Complete the proof of the identity by choosing the rule that justifies each step.(1-cosx)(1+cosx)=sin^2x
Elena-2011 [213]

You have the following expression:

(1+cosx)(1-\cos x)=\sin ^2x

To verify the identity, you have that the left side of the equation becomes:

(1 + cosx)(1 - cosx) = (1 - cos^2 x)

because of the product of an expression by its conjugate result in a difference of squares. Or simplfy by expanding the factors and simplying.

Next, you have:

1 - cos^2 x = sin^2 x

because the Pythagorean identity.

Then, the identity is verified.

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1 year ago
Graph the equation by plotting three points. If all three are correct the line will appear 2y=x+2
Temka [501]

Answer:

(-2,0) and (0,1)

I could be way off

Step-by-step explanation:


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3 years ago
Will mark brainliest
prohojiy [21]

Answer:

Although water is a <u>renewable</u> resource, the amount of fresh water available for use is <u>limited</u>. Most of Earth's fresh water is <u>frozen</u> and <u>unavailable</u> for human use.

Step-by-step explanation:

It has been a while since I have done this lesson but I remember bits and pieces. Hope this helps!!

5 0
3 years ago
Fifty-four is ___% of 60.<br><br> 20 points offered
prisoha [69]

Answer:

54÷60×100= 90%

Step-by-step explanation:

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3 years ago
Read 2 more answers
The range of which function is (2, infinity)? y = 2x y = 2(5x) y = 5x 2 y = 5x 2
vova2212 [387]

The function which has range (2, infinity) from the provided function is y = 5ˣ +2. Option 4 is correct.

<h3>What is range of function?</h3>

Range of a function is the set of all the possible output values which are valid for that function.

The function whose range is (2, ∞) has to be find out.

The first function given in the problem is,

y=2^x

This function has the periodic function with period of logarithmic function and the range of this function is all the real number. This is not the correct option.

The second function given in the problem is,

y=2(5)^x

This function has the periodic function with period of logarithmic function and the range of this function is all the real number. This is not the correct option.

The fourth function given in the problem is,

y=(5)^x+2

This function is translated 5 units up to the function 5ˣ which has the range (0,∞).

Thus, the range of this function is (2, ∞).

Hence, the function which has range (2, infinity) from the provided function is y = 5ˣ +2. Option 4 is correct.

Learn more about range of the function here;

brainly.com/question/2264373

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2 years ago
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