Secondary maths collection

Welcome secondary maths teachers! Are you looking for quality assured resources, designed to make lesson planning easier? Spanning across multiple topics and key stages, this extensive collection, hand-picked by members of the Tes maths panel, is the perfect starting point...
Craig BartonCraig Barton - Tes Maths Advisor

Hand-picked by:

colm1405Jo MorganDaveGaleInteractive MathsCraig Barton

    Exact value of trigonometric ratios

    Lesson presentations and activities

    • This worksheet encourages students to become familiar with 'special triangles' to calculate exact trig values without a calculator. By focusing on multiples of 30, 45 and 60, it also helps students spot symmetry in graphs. I created this resources to introduce double angle formula/additonal formula. Answers attached :)

      • Finding exact values of cosx - discovery learning sheet.docx
      • Finding exact values of sinx - discovery learning sheet.docx
      • Finding exact values of tanx - discovery learning sheet.docx

      Reviews

      UmmSumayyaa3 years ago4

      Lovely pictorial intro to exact trig values. Thank you.

      kooldude3 years ago5

      Nice way to introduce trig graphs

      dubey6 years ago5

      Very nicely laid out. Really useful. Thanks

    • Foundation tier now requires students to know the exact values in surd form of specific angles.
      A simple and clear illustration of how to derive these values, and the values themselves.
      Easy to use in the classroom, or print slides for crib sheets for learners.
      The specs require:
      '•know the exact values of sin θ and cos θ for θ = 0°, 30°, 45°, 60° and 90°
      •know the exact value of tan θ for θ = 0°, 30°, 45° and 60 ’
      Includes a recap of the trig functions and Pythagoras, and the graphs of each function to show values at zero and ninety degrees, plus showing that tan 90 does not exist.
      Plus an activity to use the above values in sin and cos sum and difference formulas, giving practice in manipulating surds for higher candidates, and an extension to use the addition and subtraction formula for tangent.
      Hence entirely suitable for A’level pure mathematics, and recap of GCSE knowledge and skills.
      If you like this, try my big bundle of material on surds for £3. https://www.tes.com/teaching-resource/maths-gcse-working-with-surds-huge-bundle-of-stuff-11551032

      • exact-values-of-sin-cos-tan.docx
      • exact-values-of-sin-cos-tan.pdf
      • trig-values-questions.pptx
      • Surds-in-trigonometry.pptx
      • Surds-in-trigonometry.pdf
      • trig-values-questions.pdf

      Reviews

      TeasMad3 years ago3

      Nice resource, would have given 4* but there's an error on the Word doc for cos 30°. The PDF is fine, you could replace the Word image with a screen clip from the PDF to fix it. Would be even nicer if all the angles could have degree symbols ;) The questions showed up fine for me thanks (but probably on an older version of PP).

      hlcwilson3 years ago1

      Questions do not show

      Judy0875 years ago5

      Perfect ! thanks you. Teaching this on ZOOM this evening . Really like this method.

    • PowerPoint and worksheet explaining where special trig ratios come from. I created these for use with my Y11 class who are taking Level 2 Certificate in Further Maths. To print of worksheet, must click 'print to scale'.

      • Angles of 30, 60 and 45 degrees.pptx
      • Triangles of 30,45 and 60 degrees proofs.pptx

      Reviews

      londonsecondary5 years ago5

      TES Resource Team7 years ago5

      Thank you for publishing your resource. It has been selected to be featured in a new secondary maths collection.

      anjalehmann8 years ago4

      Good animated powerpoint with diagrams to introduce how to derive exact trig values. Could easily by adapted to needs.

    Practice questions, homeworks and assessments