Trigonometry help plz
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Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)
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Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?
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Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.
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