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3 years ago

Prove that: sin8A/1-cos8A=cot4A

Mathematics

1 answer:

nikitadnepr [17]3 years ago

8 0

Step-by-step explanation:

Recall the identity

$\tan \frac{A}{2}= \dfrac{1 - \cos A}{\sin A}$

We can see that

$\dfrac{\sin 8A}{1 - \cos 8A} = \dfrac{1}{\tan 4A}= \cot 4A$

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timurjin [86]

Answer:

A 1/2

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3 years ago

A company that offers tubing trips down a river rents tubes for a person to use for $20 and “cooler” tubes to carry food and wat

Licemer1 [7]

<u>Answer:</u>

The number of each type of tube does the group rent is 11 tubes for person and 4 “cooler” tubes to carry food and water

<u>Explanation:</u>

The rents for tubes for a person to use = $20

The rents for “cooler” tubes to carry food and water = $12.50.

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11 tubes whose rent cost $20 = $11 \times 20$

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4 “cooler” tubes rent cost $12.50 = $4 \times 12.5$

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Therefore for 15 tubes = 11 +4= 15

cost = 220 + 50

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Solution:

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3 years ago

Prove that: sin8A/1-cos8A=cot4A​

Prove that: sin8A/1-cos8A=cot4A