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And you can verify that this right triangle the sides work out.
Trigonometric ratios math. To help memorize the three trig ratios for sine cosine and tangent the acronym soh cah toa is used. S ine is o pposite over h ypotenuse. You will learn here to build a trigonometry table for these ratios for some particular angles such as 0 30 45 60 90. You probably learned that already from geometry.
C osine is a djacent over h ypotenuse. The three standard ratios are the sine cosine and tangent. These are often abbreviated sin cos and tan. T angent is o pposite over a djacent.
Here is a short two and a half minute video which shows the sine cosine and tangent ratios. There are six 6 ratios such as sine cosine tangent cotangent cosecant and secant. We know from the pythagorean theorem that 3 squared plus 4 squared has got to be equal to the length of the longest side the length of the hypotenuse squared is equal to 5 squared. There are six common trigonometric ratios that relate the sides of a right triangle to the angles within the triangle.
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