Remember how we said that sin⁡⁻¹, cos⁡⁡⁻¹ and tan⁡⁡⁻¹ aren’t quite the same as 1/sin⁡, 1/cos⁡ and 1/tan? Here’s why…

trigfunctions 三角函数 trig 2024-11-20 10:26  5