Trick for trigonometric ratios.

      💁    Tricks to learn                                           TRIGONOMETRY ratio. 

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Trigonometri is a interesting and scoreing

Unit of maths. The first part of trigonometry is to learn its ratios of 0° 30° 60°45° & 90°.

Here are steps how to learn these ratios from HAND TRICK.

👉Step1:Let consider your fingres of left hand as degrees from 0° to 90°.as shown in image.

👉Step2:Now for SIN ratios calculation

           we have to move from right to left.

          And count the numbers of fingres before the degree you want.

👉Step3: as we count the number now write this no. with √ in numerator and √4 in denominator (√4 is commonly written in denominator for this trick)

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Now Let take an e.g if we want to find the value of sin60.thus according to our assumtion our forefinger 

Is 60° so this finger from right side is on 4th number so there are 3 finger before forefinger

~ sin60° =√3/√4=√3/2
    IF WE KNOW VALUES OF SIN SO WE CAN FIND ANY RATIO
  sin0=cos90,sin30=cos60......
tan=sin/cos,1/sin=cosec......
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