Indirect measurement is often done using the tangent ratio, especially when trying to determine the heights of very tall objects.  Learn about the tangent ratio as the first of 3 trigonometric ratios you will look at this year.

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Download this file (10.3.1.notes.exemplars.pdf)10.3.1.notes.exemplars.pdfExamples of types of tangent questions you should be able to do174 kB
Download this file (10.3.1.notes.tangent.pdf)10.3.1.notes.tangent.pdf3.1 Notes on Tangent Ratios1233 kB