OpenStax, Precalculus 2e §5.4 Right Triangle Trigonometry · Exercise 7 · Trigonometry · Right triangles
Right Triangle Trigonometry · Exercise 7
Use cofunctions of complementary angles.
cos \left(\frac{\pi}{3}\right) = sin (___)
This exercise has fill-in blanks from its source book and no answer key.
OpenStax, Precalculus 2e · §5.4 Right Triangle Trigonometry · Exercise 7
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Checked against the answer in OpenStax, Precalculus 2e.