Q5. Taking θ= 30° verify that: cos3θ = 4cos³θ -3cosθ

Q6. Taking A= 60° and B= 30° verify that : sin (A - B) = sin AcosB - cosAsinB

This podcast is a part of a series for, CBSE Class 10 Maths. We recommend that you take a look at our YouTube channel, to enter this new world of virtual learning at its best. || Youtube: Shiksha Abhiyan || t.ly/dN9j8 ||

Q5. Taking θ= 30° verify that: cos3θ = 4cos³θ -3cosθ

This podcast is a part of a series for, CBSE Class 10 Maths. We recommend that you take a look at our YouTube channel, to enter this new world of virtual learning at its best. || Youtube: Shiksha Abhiyan || t.ly/dN9j8 ||

Q4. Taking θ= 30° verify that: sin3θ = 3sinθ - 4sin³θ

This podcast is a part of a series for, CBSE Class 10 Maths. We recommend that you take a look at our YouTube channel, to enter this new world of virtual learning at its best. || Youtube: Shiksha Abhiyan || t.ly/dN9j8 ||

Q3. Taking θ = 30° verify each of the following : tan2θ = 2tanθ / 1- tan' θ

This podcast is a part of a series for, CBSE Class 10 Maths. We recommend that you take a look at our YouTube channel, to enter this new world of virtual learning at its best. || Youtube: Shiksha Abhiyan || t.ly/dN9j8 ||

Q2. Taking θ = 30° verify each of the following : cos2θ = 2cos' θ - 1 = 1- 2sin'θ

This podcast is a part of a series for, CBSE Class 10 Maths. We recommend that you take a look at our YouTube channel, to enter this new world of virtual learning at its best. || Youtube: Shiksha Abhiyan || t.ly/dN9j8 ||