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To be able to calculate / know exact trig ratios

Higher, KS4

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  • Exact Trig Ratio proof from an equilateral and isosceles triangle (Maths - School)

    Exact Trig Ratio proof from an equilateral and isosceles triangle (Maths - School)

    Exact Trigonometric Ratio proof

    This video explains how to work out the exact trig ratios with proof which is required for GCSE Maths. Watch the video, subscribe, take notes, then go to our website for some practice...

    Please see our other video on a way to "remember" it.
    https://www.youtube.com/watch?v=oUb8PiWGCt8

    Please visit https://maths-school.co.uk for more revision

    Support us by subscribing to our channel - click here: https://bit.ly/2Y3ggGh
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  • How to Remember Trig Ratios for Exact Values - a GCSE Maths Revision Lesson (Maths-School)

    How to Remember Trig Ratios for Exact Values - a GCSE Maths Revision Lesson (Maths-School)

    To remember trig ratios, it's best to have a clear method. I think this is by far the easiest way, and covers all Sin Cos and Tan.

    This easy table method will support you in being able to remember the exact trigonometric ratios or exact trig values for special angles - almost instantly!
    Find the sin, cos and tan values for 0, 30, 45, 60 and 90 degrees without needing a calculator

    Become a trigonometry master by filling in a table - it's as easy as 0,1,2,3....4

    Support us by subscribing to our channel - click here: https://bit.ly/2Y3ggGh

    Please visit https://maths-school.co.uk for more revision
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