Trigonometry Trigonometry is the study of triangle, in which side and angles are studied . There are three sides and three angles in a triangle . Trigonometry is basically used in right angle triangle . Revision Note:- A. Acute Angle :- angles whoes value exists between 0' and 90` ∡ B. Right Angle:- Angle whoes value is 90` known as right angle. C. Right Angle Triangle:- A Triangle in which one angle is right angle...