cos 45°sec 30° + cosec 30
Solution
Sure, let's solve this step by step:
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First, we need to know the values of cos 45°, sec 30°, and cosec 30°.
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The value of cos 45° is √2/2 or 0.7071.
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The value of sec 30° is 2/√3 or 1.1547. Sec is the reciprocal of cos, so sec 30° = 1/cos 30°.
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The value of cosec 30° is 2. Cosec is the reciprocal of sin, so cosec 30° = 1/sin 30°.
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Now, substitute these values into the equation:
cos 45°sec 30° + cosec 30° = (√2/2 * 2/√3) + 2
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Simplify the equation:
= (√2/√3) + 2
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To make it easier, rationalize the denominator:
= (√2*√3/3) + 2
= √6/3 + 2
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Convert 2 into a fraction with 3 as the denominator:
= √6/3 + 6/3
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Add the fractions:
= (√6 + 6)/3
So, cos 45°sec 30° + cosec 30° = (√6 + 6)/3.
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