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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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Pls help due in 15 mins
solmaris [256]
1) y = 8 x = 7.5
2) y = 3 x = 12
5 0
3 years ago
Read 2 more answers
8.76× 10 6  is  times  than 8.76× 10 2 .
VashaNatasha [74]

10^6 = 10 *10*10*10*10*10 = 1,000,000

10^2 = 10*10 = 100

1000000/100 = 10,000 times larger

4 0
4 years ago
Given AB is a diameter, find the measure of
Sonbull [250]

Answer:

Angle BCA = 90

Step-by-step explanation:

A triangle inscribed inside of a circle using the diameter as it's hypotenuse is a right triangle

Where the angle opposite of the hypotenuse ( or diameter ) is the right angle

Angle BCA is the angle opposite of the diameter

Hence BCA = 90

7 0
3 years ago
What is the surface area of the triangular prism (Look at image)
8_murik_8 [283]

Answer:

\Large \boxed{\sf 384 \ m^2}

Step-by-step explanation:

Surface area ⇒ area of 2 triangles + area of 3 rectangles

(8 \times 3 \times 0.5 \times 2)+(20 \times 5 \times 2+20 \times 8)=384

3 0
3 years ago
Read 2 more answers
Which ordered pair is a solution to the equation? 3x-4y=13
ASHA 777 [7]
The correct answer is B
When you put the values of x and y in the equation

3(3) - 4(-1) = 13

9 + 4 =13

13=13 (correct answer)

When you try putting the rest of the values in the equation the answer doesn’t match ,hence ,the correct answer is B.I hope I get the brainliest answer!
7 0
3 years ago
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