TRIGNOMETIC IDENTITIES
Trigonometric Formulas: Trigonometry Formulas For Class 10, 11 & 12 Before getting into the trigonometric formula list, let us consider the following right-angled triangle: As you can see, the three sides of the triangle are: a. Base: The side that is horizontal to the plane. b. Perpendicular: The side making an angle of 90 degree with the Base. c. Hypotenuse: The longest side of the triangle. Also, θ θ is the angle made by Hypotenuse and Base. Then, sine of angle θ θ = sin θ sin θ = P e r p e n d i c u l a r H y p o t e n u s e P e r p e n d i c u l a r H y p o t e n u s e cosine of angle θ θ = cos θ cos θ = B a s e H y p o t e n u s e B a s e H y p o t e n u s e tangent of angle θ θ = tan θ tan θ = P e r p e n d i c u l a r B a s e P e r p e n d i c u l a r B a s e cotang...