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Artemon [7]
3 years ago
14

Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal. cos x - cos x

sinx = cos3 x
Mathematics
2 answers:
dangina [55]3 years ago
4 0
The answer is 0 because 180 degrees does not make a valid statement
Mashutka [201]3 years ago
3 0

Answer:

The answer is pi/4

Step-by-step explanation:

You substitute each x for "pi/4", you will see that the equation is incorrect, the two values are no longer equal.

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What type of graph is represented by the equation: 3x - 2x²
ruslelena [56]
A quadratic because of the -2x^{2}.
5 0
3 years ago
59.952 rounded to the nearest tenth
Trava [24]
Rules for rounding is if the previous place is 5 or more, you round up. If it is less than 5, you round down. The thousandths place is five, so you would round up. Now you would also round the ones, since the tenths is at 9. So it would be 60.0
6 0
4 years ago
4x+112=9x+72<br> solve for X
denis23 [38]

Answer:

x = 8

Step-by-step explanation:

4x + 112 = 9x + 72

-112                  -112

4x = 9x - 40

-9x   -9x

-5x = -40

-----  --------

-5       -5

x = 8

4 0
3 years ago
Please i need help
White raven [17]
Answer
I think 10
Hope this help
7 0
3 years ago
Which of the following expressions is correct?
RUDIKE [14]

<em>l-37l=37 is the correct answer.</em>

7 0
3 years ago
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