Answer 16, 18, 20 T1 A Search t goes dians TT 13 Suppose 2 <<0 and cos=.Evaluate asin (b tan0 t goes dians 14 Suppose- asin (b tan 15 Suppose 0<<and tan-1Evaluate: acos0 bsin t con- th the 16 Suppose0<< and tan=.Evaluate: acos0 bsin at con- th the 17 Suppose- <<0 and tan=-3.Evaluate: acos0 (bsin origin th the 18 Suppose - < < 0 and tan = -2. Evaluate: Igso(e) (b sin0 andcos=.Evaluate asec (bcsc ccot origin ith the h that h that 20 Suppose 0<< 2 and sin=.Evaluate acsc bsec ccot Given that cos15=2+3 sin22.5=2-2 ands 2 2 in Exercises 21-30 find exact expressions for the indicated quantities. [These nalue will be derived in Ex-
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5=2-2, we can use the trigonometric identity cos^2θ + sin^2θ = 1 to find the value of sin15. Show more…
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tan a = 8/15, π < a < 3π/2; cos b = -5/13, π/2 < b Find sin(a+b) A) 140/221 B) 220/221 C) -220/221 D) 171/221 E) -21/221 F) -140/221 cos θ = 2/3, 3π/2 < θ < 2π Find sin(2θ) A) -1 B) -2√5/3 C) 4√5/9 D) 12/13 E) -4√5/9 F) 1 G) -12/13 H) 2√5/3
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