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Express the angle as a decimal, to the nearest ten-thousandth of a degree.
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Q78: Approximate to four decimal places. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg"
Q83: Make the trigonometric substitution <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Make
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Q108: Verify the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8634/.jpg" alt="Verify the
Q121: Find the distance d (A, B) between