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How to Find Trigonometric Ratios Based on Reference AngleItsMyAcademy.com

How to Find Trigonometric Ratios Based on Reference Angle



Hi ! I hope you are watching continuously the videos series of trigonometry.

Now you are perfect in trigonometric fundamental concept please learn & remember those tricks  & short sentences.

Now in this videos we are going to learn – how to find the trigonometric ratios based on the reference angle taken.

First think this concept is really simple and now watch this video taking you notebook and pen !



In this problem the main thing is how you observe the right angle triangle and determining the Perpendicular & Base Side. First see the

reference angle in the question which angle it is then use the  as we already discussed trick-

1st –    Luther Had Some Books Of Personality.

L – H Largest/Longest side   Hypotenuse

S-B Seat of angle Base

O- P –  Opposite of angle Perpendicular

And then see which trigonometric ratios you have to find out using 2nd trick – Some People Have Curly Black  Hair They Perform  Best.

Some (Sine) Curly (Cos) They (Tan)
People  (P) Black  (B) Perform (P)
Have     (H) Hair   (H) Best          (B)

Here I am listing some problems please solve and  if you feel any problem then please comment !

If you have finished doing these all then lets watch another video  –

4.            Trigonometry – Finding  5 other Ratios If Given One !

5.            Solving Trigonometric Expression From Given Relation

6.            Solving Trigonometric Expression Using Pythagoras Theorem

7.            Trigonometric Ratios Verifying Problems

8.           Trigonometric Ratios of 45 Degree

9.           Trigonometric Ratios of 30 Degree

10.          Trigonometric Ratios of 60 Degree

11.        Trigonometric Ratios of 0 Degree

12.        Trigonometric Ratios of 90 Degree

13.        Trigonometry Tables – How to Remember and Write Them If You Know One !

14.         Trigonometric Ratios – Solving Trigonometric Expression Using Trigonometry Table -Model 1

15.        Trigonometric Ratios – Solving Problems Using Trigonometry Table – Model 2

16.      Trigonometric Ratios- Solving Trigonometric Expression -Angle Related Problems- Model 3

17.       Trigonometric Ratios -Finding the Value of Angle – Angle Related Problems – Model 4

18.        Trigonometric Ratios -Finding the Value of Angle from Given Relation-Model 5

19.       Trigonometric Ratios- Finding the Angle & Value of Trigonometric Expression-Model 6



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