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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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What is another way to write 7/8x+3/4=-6

Bess [88]

Answer:

$7x + 6 = - 48$

Step-by-step explanation:

The given expresion is

$\frac{7}{8}x + \frac{3}{4} = - 6$

We multiply through by 8 to get:

$8 \times \frac{7}{8}x + 8 \times \frac{3}{4} = - 6 \times 8$

We cancel out to obtain:

$7x + 2 \times 3 = - 6 \times 8$

We simplify to obtain:

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2 years ago

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Zielflug [23.3K]

Answer:

length = 48 feet , width = 32 feet

Step-by-step explanation:

Using

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Prove that: sin8A/1-cos8A=cot4A​

Prove that: sin8A/1-cos8A=cot4A