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Year 10 Interactive Maths - Second Edition


Using the Cosine Ratio

Example 5

Find the value of the pronumeral in the following diagram, correct to 2 decimal places.

Solution:


Example 6

Find the length of the hypotenuse in the following diagram, correct to 2 decimal places.

Solution:

Let the length of the hypotenuse be x cm.

So, the length of the hypotenuse is 109.45 cm.


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