2 years ago

Help me asap please

Mathematics

2 answers:

Sedaia [141]2 years ago

7 0

Answer:

it is true, true, false. your welcome

Degger [83]2 years ago

5 0

Step-by-step explanation:

1st - false

2nd - true

3rd - false

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The length of the room is 3 times the width and the total area of the room is 27 square meters. What is the length of the living

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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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We can write 30° as: 45° - 15°

Then:

$cos(30\°) = cos(45\°-15\°)$

Using the formula for subtraction of angles we have:

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Notice that we have achieved the expression shown in the statement

Finally:

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