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Evaluate the following:cos45/sec30 + 1/sec60\(\frac{cos45^{\circ}}{sec 30^{\circ}}+\frac1{sec 60^{\circ}}\) |
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Answer» \(\frac{cos45^{\circ}}{sec 30^{\circ}}+\frac1{sec 60^{\circ}}\) ⇒ cos 45° cos 30° + cos60° ⇒ \(\frac1{\sqrt2}\times\frac{\sqrt3}2+\frac12\) \(=\frac{\sqrt3+\sqrt2}{2\sqrt2}\) |
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