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F.4 Maths...Solving Trigonometric Equations,,,help! -~ -
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1.sinθ= 0.7 and 0o≦θ≦ 360o sinθ= 0.7 θ = 44.4o 或θ = 135.6o 2.cosθ= -0.2 and 0o≦θ≦ 360o cosθ= -0.2 θ = 101.5o 或θ = 258.5o 3.tanθ= 1.5 and 0o≦θ≦ 360o tanθ= 1.5 θ = 56.3o 或θ = 236.3o 4.sinθ= 0.38 and 0o≦θ≦ 180o sinθ= 0.38 θ = 22.3o 或θ = 157.7o
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F.4 Maths...Solving Trigonometric Equations,,,help! -~ -
發問:
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plz~淨係一條step 加一個答案! 1.sinθ= 0.7 and 0(degree)≦θ≦ 360(degree) 2.cosθ= -0.2 and 0(degree)≦θ≦ 360(degree) 3.tanθ= 1.5 and 0(degree)≦θ≦ 360(degree) 4.sinθ= 0.38 and 0(degree)≦θ≦ 180(degree) P.S.(degree) =the symbol of the angle *= ]最佳解答:
1.sinθ= 0.7 and 0o≦θ≦ 360o sinθ= 0.7 θ = 44.4o 或θ = 135.6o 2.cosθ= -0.2 and 0o≦θ≦ 360o cosθ= -0.2 θ = 101.5o 或θ = 258.5o 3.tanθ= 1.5 and 0o≦θ≦ 360o tanθ= 1.5 θ = 56.3o 或θ = 236.3o 4.sinθ= 0.38 and 0o≦θ≦ 180o sinθ= 0.38 θ = 22.3o 或θ = 157.7o
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