问题
填空题
9:00时,钟面上时针和分钟成______角,6:00时成______角.
答案
(1)360°÷60×15,
=6°×15,
=90°,
90°的角是直角.
答:9:00时,钟面上时针和分钟成直角.
(2)360°÷60×30,
=6°×30,
=180°,
180°的角是平角.
答:6:00时,钟面上时针和分钟成平角.
故答案为:直,平.
9:00时,钟面上时针和分钟成______角,6:00时成______角.
(1)360°÷60×15,
=6°×15,
=90°,
90°的角是直角.
答:9:00时,钟面上时针和分钟成直角.
(2)360°÷60×30,
=6°×30,
=180°,
180°的角是平角.
答:6:00时,钟面上时针和分钟成平角.
故答案为:直,平.