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Question 3, Review Exercise
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istan. =====Question 3(i)===== Express as single trigonometric ratio: $\frac{1}{\sqrt{2}}(\sin \beta+\cos \beta)... gn*} =====Question 3(ii)===== Express as single trigonometric ratio: $\frac{1}{\sqrt{2}} \sin 75^{\circ}+\frac{