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Cosine of angles

Questions (1)

Express each of the following in terms of the cosine of another angle between 0 degrees and 180 degrees:a) cos 20 degrees b) cos
1. 4 answers
2. asked by runner
3. 982 views

Subcategories (1)

Expressing angles between 0 and 180 degrees

Parent Categories (1)

Trigonometry

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