So, if you don’t have good algebra or trig skills you will find it very difficult to complete this sequence of courses. These functions have the prefix co- in them for a reason: cosine is the sine of the co-angle, cotangent is the tangent of the co-angle, and cosecant is the secant of the co-angle. Good algebra and trig skills will also be required in Calculus II or Calculus III. You use them when you see aspart of the integrandone of the expressions a2x2, a2+x2, or x2a2, whereais some constant. Then the derivatives of $\cos$, $\cot$, and $\csc$ can be memorised with not much more effort. the denitions the derivatives sin tancos (sin) cos (tan) sec2 seccos (cos) sin(sec) sectan There are three kinds of trig subs. ![]() ![]() Here is a trick I use to remember the derivatives and antiderivatives of trigonometric functions. Trigonometry Cheat Sheet - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online.
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