填表(有关高中数学必修四任意角的三角函数)角a 0 π/6 π/4 π/3 π/2 π 3π/2 2πsinacosatana
2019-06-25
填表(有关高中数学必修四任意角的三角函数)
角a 0 π/6 π/4 π/3 π/2 π 3π/2 2π
sina
cosa
tana
优质解答
角a 0 π/6 π/4 π/3 π/2 π 3π/2 2π
sina 0 1/2 √2/2 √3/2 1 0 -1 0
cosa 1 √3/2 √2/2 1/2 0 -1 0 1
tana 0 √3/3 1 √3 无意义 0 无意义 0
角a 0 π/6 π/4 π/3 π/2 π 3π/2 2π
sina 0 1/2 √2/2 √3/2 1 0 -1 0
cosa 1 √3/2 √2/2 1/2 0 -1 0 1
tana 0 √3/3 1 √3 无意义 0 无意义 0