trigfunctions

A-level数学：三角函数微分 Differentiating Trig Functions

We’re now going to look at how to differentiate the simple trig functions – that’s sin, ⁡cos and tan.Make sure you are happy with

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…