If sin(α) =8/17 where 0 < a <π/2 and cos(β) = 5/13 where 3π/2 < β < 2π. Find sin(α+β), cos(α-β), and tan(α-β). How do you find these values?

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  • alex
    Lv 7
    4 years ago

    hints:

    cos(α) =15/17

    tan(α) =8/15

    sin(β) =-12/13

    tan(β) =-12/5

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