theodi/breasal

module Breasal

  module Utils    

    def deg_to_rad(degrees)
        degrees / 180.0 * Math::PI
      end

      def rad_to_deg(r)
        (r/Math::PI)*180
      end

      def sin_pow_2(x)
        Math.sin(x) * Math.sin(x)
      end

      def cos_pow_2(x)
        Math.cos(x) * Math.cos(x)
      end

      def tan_pow_2(x)
        Math.tan(x) * Math.tan(x)
      end

      def sec(x)
        1.0 / Math.cos(x)
      end

  end

end