(1)比较大小 ①cos47°48′______cos39°6′; ②tan24
题型:填空题
问题:
(1)比较大小
①cos47°48′______cos 39°6′;
②tan 24°7′______tan 25°7′;
③sin 42.7°______sin 52.9°.
(2)锐角a、β满足
①sina=0.476,sinβ=0.504 3,则a______β.
②cosa=0.437 6,cosβ=0.394 3,a______β.
(1)比较大小
①cos47°48′______cos 39°6′;
②tan 24°7′______tan 25°7′;
③sin 42.7°______sin 52.9°.
(2)锐角a、β满足
①sina=0.476,sinβ=0.504 3,则a______β.
②cosa=0.437 6,cosβ=0.394 3,a______β.