10.6 Equations and Identities (Solving Quadratic Trigonometric Equations)

Pearson A level maths pure maths year 1 textbook (10.6)
In this video I cover:
1. Solving quadratic trigonometric equations
2. Solving trigonometric equations using CAST diagram
3. Solving trigonometric equations using trigonometric identities
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[@fromjessica3009]

Please could you do AS Level vectors? Thank you!

[@bbbyebye-m5o]

12:42 isn't 270 degrees also a solution because it falls within the boundaries?

[@SalahFahadHussain]

can u do year 1 vectors pleaseeeee i have a test next week

[@yukimodz9127]

No😊

[@yakuubfarhan5362]

👏👏

[@waleedzaz2249]

cab you explain the graphical method? rather than astc method?

[@hamzamiah8028]

do we need to know the graphical method

[@saltyoddbod]

@@hamzamiah8028 just draw the graphs and see if the value is positive or negative on the graph,bun cast brev,all u need to use is cos(360-x) and sin(180-x) and then add 360 each time

[@hamzamiah8028]

@@saltyoddbod long bro cast way easier

[@hamzamiah8028]

@@saltyoddbod i forgot what the graphs look like too and cba to memorise

[@saltyoddbod]

​@hamzamiah8028 it's way quicker than cast even forget drawing the graphs u only need to know the rules.the questions he did took me wayyyyy shorter without cast trust but u do whatever u find easier ig