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Bila sin A cos A < 0, maka A dikuadran...

(1) pertama

(2) kedua

(3) ketiga

(4) keempat

  1. jika (1), (2), dan (3) benar

  2. jika (1) dan (3) benar

  3. jika (2) dan (4) benar

  4. jika hanya (4) yang benar

  5. jika semuanya benar

R. RGFLSATU

Master Teacher

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Pembahasan

sin A cos A < 0

(1) Kuadran I, misal A = 30 to the power of o

     sin 30 to the power of o cos 30 to the power of o = 1 half open parentheses 1 half square root of 3 close parentheses = 0.425 > 0

(2) Kuadran II, misal A = 150 to the power of o

     sin 150 to the power of o cos 150 to the power of o = 1 half open parentheses negative 1 half square root of 3 close parentheses = 0.425 < 0

(3) Kuadran III, misal A = 150 to the power of o

     sin 150 to the power of o cos 150 to the power of o = negative 1 half open parentheses negative 1 half square root of 3 close parentheses = - 0.425 > 0

(4) Kuadran IV

     sin 150 to the power of o cos 150 to the power of o = 1 half open parentheses negative 1 half square root of 3 close parentheses = -0.425 < 0

Pernyataan 2 dan 4 benar

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