evaluate trigonometric expression
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How do I evaluate the following trigonometric expression involving special angles?
1. sin60° cos30° - cos45° sin45°
2. tan60° - tan45° / 1 + tan60° tan45°
3. [1 + cot² 30°]³
Please explain.
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trigonometric expression involving special angles
How to evaluate the following trigonometric expression involving special angles?
The values of the trigonometric function of these special angles are well known. So we just need to substitute the values to the expression and evaluate it.
For example:
Then we can find the tan and cot values of these angles.
1. sin60° cos30° - cos45° sin45° =
2. tan60° - tan45° / 1 + tan60° tan45°
3. [1 + cot² 30°]³
please explain.
© BrainMass Inc. brainmass.com December 24, 2021, 7:26 pm ad1c9bdddf>https://brainmass.com/math/trigonometry/evaluate-trigonometric-expression-190084