15度角,75度角,105度角的正弦余弦...(用根号表示)!
问题描述:
15度角,75度角,105度角的正弦余弦...(用根号表示)!
15度角,75度角,105度角的正弦余弦正切余切
(用根号表示)(用根号表示)(用根号表示)!
sin15=
cos15=
tan15=
cot15=
sin75=
cos75=
tan75=
cot75=
sin105=
cos105=
tan105=
cot105=
答
(#6-#2)/4 #为根号 (#6+#2)/4 (#6-#2)/(#6+#2) (#6+#2)/(#6-#2) (#6+#2)/4 (#6-#2)/4 (#6+#2)/(#6-#2) (#6-#2)/(#6+#2) (#6+#2)/4 -(#6-#2)/4 -(#6+#2)/(#6-#2) -(#6-#2)/(#6+#2)...