2nd PUC | Class 12 | Compound Angles, Multiple Angles l Part 1, Exercise 14.1 Solved, Basic Maths

2nd PUC | Class 12 | Compound Angles, Multiple Angles l Part 1, Exercise 14.1 Solved, Basic Maths Chapter 14, Trigonometry: Compound Angles, Multiple Angles, Sub Multiple Angles and Transformation Formulae 00:00 - 4:51: Introduction to Compound Angles and Formulas 4:52 - 11:00 : Exercise 14.1 Problem No.1: Obtain the values of 75, 15, 105 degrees and Prove that Tan 75 + Cot 75 = 4 11:01 - 12:15: Exercise 14.1 Problem No 1: Prove that sec 15 + cosec 15 = 2 sqrt 6 12:16 - 12:59: Exercise 14.1 Problem No 1: Values of Sin 105, Cos 105, Tan 105 13:00 - 16:23 : Exercise 14.1 Problem no. 4: If sec A = 17/5 cosec B = 5/4 find sec (A+B) cosec (A-B) 16:24 - 18:18: Exercise 14.1, Problem no 12: If tan alpa - n/(n+1) and tan B=1/2n+1 Show that alpa+beta=pie/4 18:19 - 20:19 :Prove that cos 2A/sec A + Sin 2A/cosec A = cos A Exercise 14.1 Problem 13 20:20 - 20:57 : Prove that cos (A+pie/4) = 1/sqrt 2 (cos A - sin A) Exercise 14.1 Problem 15 20:58 - 22:28: Exercise 14.1 Problem 16 Prove that ..