function main(input){
    let args = input.split(" ").map(x=>parseInt(x));
    let a = args[0];
    let b = args[1];
    let angle = (args[2]/180)*Math.PI;



    let S = a*b*Math.sin(angle)*(1/2);
    console.log(S);
    let L = Math.sqrt(a*a+b*b-2*a*b*Math.cos(angle))+a+b;
    console.log(L);
    let H = b*Math.sin(angle);
    console.log(H);
    
}


main(require("fs").readFileSync("/dev/stdin","utf-8"));
