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Posted by on Tuesday, November 6, 2012 at 10:27am.

Find the exact value of sin75degrees using sum identity of sine

  • Math - , Tuesday, November 6, 2012 at 11:12am

    sin 75
    = sin(45 + 30)
    = sin45cos30 + cos45sin30
    = (√2/2)(√3/2) + (√2/2)(1/2)
    = (√6 + √2)/4

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