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Which of the following is equal to 8cosx−8cos(x−60∘)?8\cos x-8\cos (x-60^\circ) ?8cosx−8cos(x−60∘)?
What is the value of sin56∘−sin64∘+sin176∘?\sin {56}^\circ-\sin {64}^\circ+\sin {176}^\circ ?sin56∘−sin64∘+sin176∘?
If x=π15\displaystyle x=\frac{\pi}{15}x=15π what is the value of cosxcos7xcos9x+cos7x?\frac{\cos x \cos 7x}{\cos 9x + \cos 7x} ?cos9x+cos7xcosxcos7x?
If x=π96\displaystyle x=\frac{\pi}{96}x=96π what is the value of cos14x+cos16x+cos18xsin14x+sin16x+sin18x?\frac{\cos 14x + \cos 16x + \cos 18x}{\sin 14x + \sin 16x + \sin 18x} ?sin14x+sin16x+sin18xcos14x+cos16x+cos18x?
Which of the following expressions is equal to 73sin(θ+π3)−14cosθ?7\sqrt{3}\sin \left(\theta+\frac{\pi}{3}\right)-14\cos \theta ?73sin(θ+3π)−14cosθ?
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