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The Sine ratio is

Sine(angle) = opposite side / hypotenuse side.

This is written in 'short-hand' as

Sin(angle) = o / h

Similarly the cosine ratio is

Cosine(angle) = adjacent side / hypotenuse side.

Cos(angle) = a/h

Similarly the tangent ratio is

Tangent(angle) = opposite side /adjacent side.

Tan(angle) = o/a

NB THe sides refer to the sides of a right-angled triangle.

NNB The angle referred to is NOT the right angle, but a selected angle from the other two angles.

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lenpollock

Lvl 16
1mo ago

What else can I help you with?