Sin theta + sin square theta equal to 1 then prove that cos 12 theta + 3 cos 3 theta - Maths - Introduction to Trigonometry

Question

Sin theta + sin square theta equal to 1 then prove that cos 12
theta + 3 cos 3 theta + 3 cos theta + cos 6 theta + 2 cos 4 theta +
2 cos theta minus 2 equal to 1

MD Shahid Khan · Accepted Answer

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Sin theta + sin square theta equal to 1 then prove that cos 12 theta + 3 cos 3 theta + 3 cos theta + cos 6 theta + 2 cos 4 theta + 2 cos theta minus 2 equal to 1