1-cos25°+cos50°/sin50°-sin25° * 4tg65° + 3 = ????? Помогите решить

1-cos(25°)+cos(50°)/sin(550°)-sin(25°)*4*2.144507+3 1-cos(25°)+cos(50°)/sin(50°)-sin(25°)*4*2144507/1000000+3 (1-cos(25°)+cos(50°))4*2344507/(sin(50°)-sin(25°))*1000000+3 (1-7364798*8578028/0.76604444-0.42261827)*1000000+3 0.7364798*8578028/0.34342617*1000000+3 3+6317544.5/343426.16 3+6317545/343426 1030278+3617545/343426 7347823/343426 21.39565