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Anonymous
Anonymous asked in Science & MathematicsMathematics · 4 years ago

Fill in the blank help!?

1. __ π/3 sin π/6 = 1/2 (sin π/2 - sin π/6)

2. sin π/4 sin π/6 = 1/2 (__ π/12 -cos 5π/12)

1 Answer

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  • alex
    Lv 7
    4 years ago
    Favorite Answer

    cos

    cos

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