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Pertanyaan

Nilai sin 33 0 ∘ + 2 cos 24 0 ∘ − sin 21 0 ∘ adalah ...

Nilai  adalah ...

  1. -2

  2. -1

  3. 0

  4. 1

  5. 2

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S. Nur

Master Teacher

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Pembahasan

s i n space 330 to the power of o plus space 2 space c o s space 240 to the power of o minus space s i n space 210 to the power of o  equals s i n space left parenthesis 360 to the power of o minus 30 to the power of o right parenthesis space plus space 2 space c o s space left parenthesis 180 to the power of o plus 60 to the power of o right parenthesis space minus space s i n space left parenthesis 180 to the power of o plus 30 to the power of o right parenthesis  equals negative s i n space 30 to the power of o plus 2 left parenthesis negative c o s space 60 to the power of o right parenthesis minus left parenthesis negative s i n space 30 to the power of o right parenthesis  equals negative 1 half plus 2 left parenthesis negative 1 half right parenthesis minus left parenthesis negative 1 half right parenthesis  equals negative 1

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Nilai dari sin 33 0 ∘ + 2 ⋅ cos 24 0 ∘ − sin 21 0 ∘ adalah ....

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