Trigonometric Identities 2

A Level Maths revision tutorial video.

[nitwitgaming]

Thanks a lot, tutorial still helpful even in 2020

[jeanpierregalea]

Is this for AS Level? Because it isn't listed on the AS section in the website and I thought maybe he forgot to add it or whatever.

[melisanamwila]

Easy to understand. Thank-you . This is helpful

[gemii]

where does the 2 in (2cosec^2x+5cosecX-3=0) come from and the three like im confused

[Sim-Simma]

I swear the answer at 13:05 is wrong ?