Pure Maths EQ - Proof, Solving Trigonometric Equations and Trigonometric Identities

[@zeeshanzamurred9280]

Minor mistake with the principle solution for X. It says rounded to 4sf, but it was rounded to 4 dp. No other issues, the rest is correct 👍🏻

[@Dark__Karma]

At 3:44 you can use -tan^2 for 1 - sec^2. Just a little simpler

[@MohammedKhan-rq1pk]

That’s what I thought as well lol

[@suchsingh9184]

Same

[@icecold4085]

how do we even know what to do with these questions, it seems like you just have to know what to do.

[@jiminsforehead8570]

It’s pretty hard. You just need to know your identities and hope

[@Abdd17]

​@jiminsforehead8570 is the one on the top right of the screen (at end of video) in formula sheet

[@AlevelStudent-c1y]

I simplified it down to sin and cos values. I got Sin(2θ)=0, therefore another solution would be 1.57 ( pie/2 ) . Is this not an additional solution?

[@AlevelStudent-c1y]

Hi Sir, Where do you get these questions from ?

[@agamaze01]

thanks