Matematika

Pertanyaan

Cos 45° cos 30° - sin 45° sin 30°=...

1 Jawaban

  • cos.45°.cos 30° - sin 45°.sin 30°
    = 1/2
    √2.1/2√3 - 1/2√2.1/2
    = 1/4√6 - 1/4√2
    = 1/4(√6 - √2)

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