Videos

Introduction to Trigonometry
363

Basic Understanding of Trignometry Application
172

Introduction to Angles
172

Positive/Negative Angles
197

Systems for Measuring Angles: Sexagesimal Angles
515

Converting Angles in Degree to Minutes and Seconds
420

Solution
127

Solution
235

Systems for Measuring Angles: Centismal Angles
194

Circular System
263

Conversion between Degree and Radian
235

Parts of Circle
151

Solution
176

Solution
205

Solution
102

Solution
301

Solution
202

Solution
226

Solution
126

Allied Angles
295

Trigonometric Ratios for Allied Angles of the form nπ±θ
496

Trigonometric Ratios for Allied Angles of the form (2n+1)π/2±θ
485

Relation between θ and -θ
404

Practice: Trigonometric Functions of Allied Angles
122

Solution
614

Solution
118

Solution
952

Solution
346

Graph of Sine Function in (0, 2π)
262

Graph of Sine Function in R
310

Features of Graph of Sine Function
265

Graph of Cosine Function in (0, 2π)
154

Graph of cosine Function in R
287

Features of Graph of Cosine Function
238

Graph of Sine and Cosine Function
231

Transformation Formulae: Product to Sum/Difference for 2sinAcosB
347

Transformation Formulae: Product to Sum/Difference for 2sinAsinB and 2cosAcosB
201

Practice: Transformation Formulae on Product to Sum/Difference
53

Solution
297

Transformation Formulae: Sum/Difference to Product for 2sinAcosB
338

Solution
81

Trigonometric Ratios of Multiple Angles of the Form sin 3A
509

Trigonometric Ratios of Multiple Angles of the Form cos 3A
251

Solution
661

Solution
451

Trigonometric Ratios of Multiple Angles of the Form tan 3A
297

Trigonometric Ratios of Submultiple Angles of the Form sin A/3, cos A/3, tan A/3
231

"""Range of Trigonometric Expressions a sin θ"""
432

"""Range of Trigonometric Expressions b cos θ"""
278

"Range of trigonometric Expressions of the form a sin x+b cos x" Q1
538

"Range of Trigonometric Expressions c tan θ"
256

Solution
557

Conditional Identities Q1
215

Solution
721

Practice: Conditional Identities Q1
58

Sum of Sines of n Angles in A.P. Q2
867

Sum of Sines of n Angles in A.P. Q1
130

cot A + tan A; cot A - tan A Q3
19

Solution
205

Solution
567

Sum of Cosines of n Angles in A.P. Q2
624

Vertical Flip Transformation of Graphs of Trigonometric Functions
318

Horizontal Flip Transformation of Graphs of Trigonometric Functions
208

Solution
179

Transformation of Graphs of Trigonometric Functions using Modulus Operator
298

Graph of f(|x|)
310

Product of Cosines of n Angles in G.P.
543