Trigonmetry Formulas

 Trigonometric Concepts For Class10 chapter 8 Ex. 8.1 Before this you need to understand the some basic concepts used in Trignometry for CBSE class 10. What Is Angle Of Elevation ? Let us suppose that the any point C on ground from which angle to A which is top of the object is 60°.This is known as Angle of elevation. In simple words , it is angle formed by person eye to the top of object. What Is Angle Of Depression ? Trigonometric ratios  Some ratios of sides of right angled triangle with respect to its Acute angle are known as trigonometric ratios of Right triangle. Basic Formulas used in Exercise 8.1 chapter 8 Sin θ = P / H  Cos θ = B / H Tan θ = P / B Cot  θ = B / P Sec θ = H / B Cosec θ = H/ P Sin θ × Cosec θ = 1 Tan θ × Cot θ = 1 Cos θ × Sec θ = 1