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caawiye Admin • asked

Chapter1 (Q1) Use identities to find exact value .a. \(Cos (π/12)\) b. \(Cos (-7π/12)\) c. \(Cos40°cos50°-Sin40°sin50°\)d. \(Cos 7π/9 cos 2π/9+Sin 7π/9 sin 2π/9\)

f4 math subject#Xisaab
4 Answers
caawiye Admin • asked

Chapter1 (Q2) each function value in terms of the co-function of a complementary angle.a. \( sin 5Ï€/8 \) b. \(cot 9Ï€/10 \) c. \(sec146° (42)^’ \) d. \(Tan174°(03)^’ \) e. \( Cot 176.9814°\)

f4 math subject#Xisaab
3 Answers
caawiye Admin • asked

Chapter1 (Q3) Use the identities for the cosine of a sum or difference to write each expression as a function:a. \(Cos(0°+θ)\)b. \(Cos(90°+θ)\)c. \(Cos(180°+θ) \)d. \(Cos(270°+θ) \)

f4 math subject#Xisaab
1 Answers
caawiye Admin • asked

Chapter1 (Q4) Find Cos ( x+t) and cos ( x-t).a.Sinx=2/3 and sint=-1/3,x in quadrant 2and t quadrant 4b.Sinx=√5/7 and sint=√6/8,x in and t inquadrant 1c.Cosx=√2/4 and sint=-√5/6,x and t in quadrant 4

f4 math subject#Xisaab
1 Answers 1

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