(a) Is it true that cos (2-30°) = 2 cos 30°? Give exact answers in simplest form. (b) Expand cos(2-30°) as cos (30° +30°
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(a) Is it true that cos (2-30°) = 2 cos 30°? Give exact answers in simplest form. (b) Expand cos(2-30°) as cos (30° +30°) using the sum formula for cosine. Then simplify the result. Part: 0 / 4 Part 1 of 4 (a) Is it true that cos (2-30°) = 2 cos 30º? Give exact answers in simplest form. cos (2-30) X Х 5 2 cos 30º = The statement cos (2-30°) = 2 cos 30° is (Choose one) »