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These are the Transum resources related to the statement: "Definition of cosθ, sinθ in terms of the unit circle. Definition of tanθ as sinθ ÷ cosθ. Exact values of trigonometric ratios of θ, π/6, π/4, π/3, π/2 and their multiples. Extension of the sine rule to the ambiguous case.".

Here are some specific activities, investigations or visual aids we have picked out. Click anywhere in the grey area to access the resource.

Here are some exam-style questions on this statement:

- "
*Find the exact value of tan45° × sin30° × cos30°*" ... more - "
*(a) Write down the exact value of \(\tan 60^o\).*" ... more - "
*The area of triangle ABC (not drawn to scale) is*" ... more - "
*The cosine of acute angle \( \alpha \) is \( \frac{1}{ \sqrt 5} \)*" ... more

Click on a topic below for suggested lesson Starters, resources and activities from Transum.

Transum,

Saturday, August 17, 2019

"Here's an Advanced Lesson Starter that is just right to present to a class when they are learning exact values of common angles. It is a challenge to find the Tangent of 22.5^{o} without using a calculator but a helpful diagram is included."

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