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10 points

Please elaborate.

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11 points
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Sine of theta is the ratio of the lengths of the Opposite side over the Hypotenuse (SOH). Cosine of theta is Adjacent over Hypotenuse (CAH). Tangent of theta is Opposite over Adjacent (TOA).

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3 points

How do you know which one is “opposite” and adjacent? They could literally be exactly the same but in any case they both touch the hypotenuse?

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11 points

Adjacent or opposite to the angle you’re referring to.

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7 points
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Oh you’re saying opposite site and adjacent site in English

Anyway how is the r=1 circle harmful for that?

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5 points

It’s not. It’s just one of those things that people groan about because when you first learn it the concept is confusing. After about 15 minutes of instruction on a unit circle, it’s not a big deal at all.

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