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GR.7.6

Exact values of sine, cosine and tangent

Derive and use the exact values of sine, cosine and tangent for some angles

3 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.

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Grade 3–7 Core 🇬🇧 UK

Exact Trig Values - GCSE Maths

1st Class Maths 226K views

Clear UK walkthrough: memorise, use and derive every exact trig value with worked exam questions.

Jump to 0:10Which values do you need to learn?0:42How to memorise all of the values 5:131 mark exam questions (usually on foundation)5:45Using exact values with SOHCAHTOA - Example 1 7:22Using exact values with SOHCAHTOA - Example 2 8:43Deriving the values of sin(45), cos(45) and tan(45)

Grade 5–8 Core 🇬🇧 UK

How To Find The Exact Trigonometric Values - Trick for Trigonometry | Sin Cos Tan | GCSE Maths Tutor

The GCSE Maths Tutor 148K views

Thorough higher-tier method for finding exact trig values on the non-calculator paper.

Grade 4–6 Core 🇬🇧 UK

Trigonometry Exact Values

Maths Genie 192K views

Maths Genie's clear run-through of the exact trig values and how to use them.