Use the substitution 3sec θ, where θ lies in quadrant III, in the expression (9)^(3/2)/x and show the result is 9(sec θ tan θ sin θ). Using appropriate identities, if θ = 20° and T < θ < 2π, find sin θ and cos θ.
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Substitute 3secθ for x in the expression (9)3/2/x: (9)3/2/x = (9)3/2/(3secθ) = 3(3secθ) = 9secθ Show more…
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