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il63 [147K]
1 year ago
11

Prove that Cos4x=8Cosx -8Cosx​

Mathematics
1 answer:
harkovskaia [24]1 year ago
8 0
Please see the image attached

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30 seconds of 2.5 mins in percentage
WARRIOR [948]

Answer:

20%

Step-by-step explanation:

2.5 min =(60×2.5)sec=150 sec

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BaLLatris [955]

Answer:

8cm

Step-by-step explanation:

x is similar to the side 12cm.

We know the second triangle is rotated counter-clockwise from the first because similar triangles have the same angle measurements.

Since the angle in the first triangle between 9cm and 15cm is 53°, it can't be similar to the angle between x and the hypotenuse in the second triangle.

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6/9 = 2/3

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3 years ago
Show all the steps that you use to solve this problem.
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Answer:

11

Step-by-step explanation:

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