Q78. Which of the following is equal to cos(3α)?Mathematics — NUST Mock 8 — Question 78 of 200A. 3sin(α) - 4sin3(α)B. 3sin(α) + 4sin3(α)C. 4cos3(α) - 3cos(α)D. 4sin(α) + 3sin3(α)Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →