\cos ^{2} 112 \frac{1}{2}-\sin ^{2} 52 \frac{1^{0}}{2} – InterviewSolution

1.	\cos ^{2} 112 \frac{1}{2}-\sin ^{2} 52 \frac{1^{0}}{2}
Answer» (cos225/2+ sin 105/2)(cos225/2-sin105/2)(cos112.5+sin52. 5)(cos112.5-sin52.5)

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