Quiz Trigonometri

Persamaan dari kurva di bawah ini, adalah …

A. y=2 sin⁡ 2(x+20)

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B. y=2cos⁡2(x+20

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C. y=2cos⁡2(x+10)

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D. y = 2 sin \(frac {9}{5} \) (x + 20)

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E. y = 2 cos \(frac {9}{5} \) (x + 20)

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Pada interval 0°≤x≤180°, nilai minimum dari y=2 sin ⁡(2x-20°) diperoleh pada x = ….

A. 115°

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B. 125°

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C. 135°

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D. 145°

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E. 155°

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Pada segitiga KLM di bawah ini nilai dari sin⁡α + cos ⁡β = ….

A. \( \frac {12} {10} \)

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B. \( \frac {10} {10} \)

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C. \( \frac {16} {10} \)

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D. \( \frac {18} {10} \)

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E. \( \frac {20} {10} \)

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Dikerahui segiriga ABC siku-siku di B, jika <A = 30° dan panjang sisi AC adalah 10, maka Panjang BC dan AB adalah ….

A. 10 dan 5 \( \sqrt 3 \)

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B. 5 dan 5 \( \sqrt 3 \)

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C. 5 \( \sqrt 3 \) dan 5 \( \sqrt 2 \)

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D. 10 dan 5 \( \sqrt 2 \)

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E. 5 \( \sqrt 3 \) dan 10 \( \sqrt 3 \)

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Nilai dari

A. -2

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B. – \( \frac {1} {2} \)

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C. \( \frac {1} {2} \)

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D. 1

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E. 2

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Untuk seriap segiriga sembarang ABC, nilai sin \( \frac {1} {2} \) (A + B) adalah…

A. sin C

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B. cos 2C

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C. cos \( \frac {1}{2} \) C

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D. cos C

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E. sin \( \frac {1}{2} \) C

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A. – \( \frac {1}{4} \) \( \sqrt 6 \)

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B. \( \frac {1}{4} \) \( \sqrt 6 \)

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C. \( \frac {1}{2} \) \( \sqrt 6 \)

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D. \( \frac {1}{2} \) \( \sqrt 6 \)

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E. \( \sqrt 6 \)

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Bentuk sederhana dari \( \frac {tan a + sin a} {1 + sec a} \)

A. sec ⁡α

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B. sin ⁡α

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C. tan ⁡α

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D. csc a

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E. cos a

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Diketahui p – q = sin a dan \( \sqrt 2pd \) = cos a, maka p^2 + q^2

A. -2

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B. -1

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C. 0

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D. 1

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E. 2

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Jika cos⁡α=p, p≠0, maka cos⁡ (270°-α) = ….

A.

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B.

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C.

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D.

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E.

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