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Mathematics

Find the values of :

sec 30° tan 60° + sin 45° cosec 45° + cos 30° cot 60°

Trigonometrical Ratios

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Answer

Solving,

sec 30° tan 60° + sin 45° cosec 45° + cos 30° cot 60°23×3+sin 45°×1sin 45°+32×132+1+124+2+1272312.\Rightarrow \text{sec 30° tan 60° + sin 45° cosec 45° + cos 30° cot 60°} \\[1em] \Rightarrow \dfrac{2}{\sqrt{3}} \times \sqrt{3} + \text{sin 45°} \times \dfrac{1}{\text{sin 45°}} + \dfrac{\sqrt{3}}{2} \times \dfrac{1}{\sqrt{3}} \\[1em] \Rightarrow 2 + 1 + \dfrac{1}{2} \\[1em] \Rightarrow \dfrac{4 + 2 + 1}{2} \\[1em] \Rightarrow \dfrac{7}{2} \\[1em] \Rightarrow 3\dfrac{1}{2}.

Hence, sec 30° tan 60° + sin 45° cosec 45° + cos 30° cot 60° = 312.3\dfrac{1}{2}.

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