Chapter1 (Q6) Use identities to find each exact value :a. \(Tan(-7π/12 ) \) b. \(Sin40°cos50°+sin40°sin50° \) c.\ (Tan80°+Tan55°)/(1-Tan80°Tan55°) \)d. \((Tan80°+Tan(-55°))/(1-Tan80°Tan(-55°)\) e.\( (Tan100°+Tan(80°))/(1-Tan100°Tan(80°)\) f. \((Tan 5π/12+Tan π/4)/(1-Tan 5π/12 Tan π/4)\)g. \( Sin π/5 Cos 3π/10 cos π/4+Cos π/5 sin 3π/10 \)
Chapter1 (Q7) Use the given information to find a) Sin (s + t ) b, Tan ( s + t) and c) the quadrant of s + t .a. \(Cos s=15/17 and sint=4/5,s in quadrant 2 and t in quadrant 1. \)b. \(Sin s=2/3 and sint=-1/3,s in quadrant 2 and t in quadrant 1.\)c. \( Cos s=-1/5 and sint=3/5,s in and t in quadrant 2.\)
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