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serious [3.7K]
3 years ago
13

Help me please don’t understand

Mathematics
1 answer:
Nina [5.8K]3 years ago
5 0

Use order of operations, or PEMDAS which stands for Parenthesis, Exponent, Division, Addition, and Subtraction.

Do those operations in that order. Can you try?

What will be the first thing you do here, according to PEMDAS?

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Step-by-step explanation:

This is known as the triple tangent identity.  Start with the fact that the three angles add up to 0.

(x − y) + (z − x) + (y − z) = 0

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x − y = -((z − x) + (y − z))

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Use reflection property:

tan(x − y) = -tan((z − x) + (y − z))

Now use angle sum identity:

tan(x − y) = -[tan(z − x) + tan(y − z)] / [1 − tan(z − x) tan(y − z)]

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tan(x − y) [tan(z − x) tan(y − z) − 1] = tan(z − x) + tan(y − z)

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Show 2-(-3) on a number line.
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I got this. Use the order PEMDAS search Up if you don’t know what it means.

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Start with What’s inside the parentheses

(X - 3) = 3x

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The divide.

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