3 years ago

If a= 1/3 5a minus 2/3 please help me

Mathematics

1 answer:

Yuki888 [10]3 years ago

4 0

Exact Form: $\frac{14}{3}$

Decimal Form: 4.6 repeating

Mixed Number Form: $4\frac{2}{3}$

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Step-by-step explanation:

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Given that cos(30°) = cos(45°)cos(15°) + sin(45°)sin(15°), it follows that cos(30°) =

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Answer:

$cos(30\°) = cos(45\°-15\°)$

Step-by-step explanation:

To solve this problem you must know the formula of subtraction of angles for the function cosx.

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Then:

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Notice that we have achieved the expression shown in the statement

Finally:

$cos(30\°) = cos(45\°-15\°)$

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Answer:

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If you are using a calculator, simply enter 3000×100÷32, which will give you the answer.

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2 years ago

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