What are submultiple angles?

If A be a given angle then A/2, A/3, A/4, etc. are called submultiple angles of the angle A. Here we will derive the formulae for submultiple of angles or numbers.

Numbers or angles like A/2, A/3, A/4, etc. are called submultiples of A.

The following are the sub-topics which deals with the trigonometrical ratio of submultiple angels A in terms of A/2,trigonometrical ratio of submultiple angels A in terms of A/3 and trigonometric ratios of the angle A/2 in terms of cos A.

**Trigonometric Ratios of Angle A2A2****Trigonometric Ratios of Angle****A3A3****Trigonometric Ratios of Angle A2A2 in Terms of cos A****tan A2A2 in Terms of tan A****Exact value of sin 7½°****Exact value of cos 7½°****Exact value of tan 7½°****Exact Value of cot 7½°****Exact Value of tan 11¼°****Exact Value of sin 15°****Exact Value of cos 15°****Exact Value of tan 15°****Exact Value of sin 18°****Exact Value of cos 18°****Exact Value of sin 22½°****Exact Value of cos 22½°****Exact Value of tan 22½°****Exact Value of sin 27°****Exact Value of cos 27°****Exact Value of tan 27°****Exact Value of sin 36°****Exact Value of cos 36°****Exact Value of sin 54°****Exact Value of cos 54°****Exact Value of tan 54°****Exact Value of sin 72°****Exact Value of cos 72°****Exact Value of tan 72°****Exact Value of tan 142½°****Submultiple Angle Formulae****Problems on Submultiple Angles**

**11 and 12 Grade Math**

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