sec[arcsin(1508/1517)]
提问:sec[arcsin(1508/1517)]
网友回答:
arcsin(1508/1517)≈83°45′21″
sec83°45′21″=1/cos83°45′21″≈1/0.1087656685≈9.1940776331≈9.194
所以:sec[arcsin(1508/1517)]=sec83°45′21″≈9.194