Fast way to learn trigonometric ratios of right angled triangles (SOHCAHTOA)

Author channel Palms Tutor   3 мес. назад

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Trick for doing trigonometry mentally!

This fast math trick can be used to mentally work out the main basic trigonometric ratios instantly! With this fast mental math technique you can work out the sin, the cos, and even the tan of the most common angles in no time at all! Become the trigonometry master!

Maths Tutorial: Trigonometry SOH CAH TOA (trigonometric ratios)

SOH CAH TOA is used to remember the trigonometry ratios; sine = opposite over hypotenuse, cosine = adjacent over hypotenuse, tangent = opposite over adjacent. This helps you work out unknown side lengths or unknown angles in a right-angled triangle. This video is a tutorial on how to apply this rule. I you like this video, please subscribe!

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Ratios - Similar Triangles

This is from one of my online courses found at


Trick to Remember TRIGONOMETRY TABLE - This Trigonometry table video lesson helps you to write & remember the trigonometric ratios of different angles from 0 degrees to 90 degrees without remembering any thing in the brain. In the previous video, we have remembered the sine table but here I am saying nothing to remember to write the trigonometric table. To write the trigonometric table from 0 - 90 for all trigonometric ratios namely sine, cosine, tangent, co- secant, secant, we simply have to write the o 1, 2, 3, 4 in each table from 0 degrees to 90 degree, and then divide each by 4 and take square root of that.. that leads us to the sine ratios of the angle. Cosine ratios is just decreasing order from 90, and tangent is the ratios of sine to cosine. Similarly, trigonometric ratio co-secant is the reciprocal of sine and trig ratio sec & cot is reciprocal of cosine and tangent respectively. I hope this trigonometric table - writing and remembering trick will help you to enhance knowledge in trigonometry. ▶️ All TRIGONOMETRY VIDEO LESSONS - ▶️ How to solve TRIGONOMETRY IDENTITY PROBLEMS - ▶️ FASTEST WAY TO REMEMBER TRIGONOMETRIC FORMULA - ▶️FAST MULTIPLICATION TRICKS For more lessons visist -

Follow these simple steps:
Draw a table and label as shown in the tutorial
Fill in the Sine row first by writing number 0-4
Divide each number by four (4) and find the square root of answer
The answer you get is the trig ratio for the sine of angles
Fill the Cosine row by writing out the values of the sine in reverse order
Tangent of angles is sine of the angle divided by the cosine of the angle.
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