![]() I'm accumulating notes with every problem regardless, but are there any calculus-specific trig identities you'd recommend knowing? Please help me bulk up the cheat sheet, I have an exam on Sunday, haha. Obviously some of this is meant to be derived from the basic identities, but I feel like I'm missing something every time. It includes the following trig laws and identities: Law of Sines, Law of Cosines, Law of Tangent, Mollweid's Formula, Trig Identities, Tangent and Cotangent Identities, Reciprocal Identities, Pythagorean Identities, Even and Odd Identities, Periodic Identities, Double Angle Identities. ![]() the antiderivative of secx = ln|secx+tanx|+C or sinxsiny=1/2(cos(x-y)-cos(x+y)). Download our free reference/cheat sheet PDF for trigonometry rules, laws, and identities (with formulas). 16 years ago? Anyway, I've written out a cheat sheet with basic trig identities and indefinite integrals from Stewart's textbook, but I'm currently in the section where we're just doing integrals of exponential trig functions and it seems like every problem involves a crucial trig identity I don't know (i.e. ![]() I'm doing okay, but I tend to get tripped up on integration involving trig functions because everything I learned about trig was in precalc in high school, so. Actually, this only works if x is positive. Using the area formula for a sector (from the previous page) and the area formula for a triangle (from heart), this becomes 1 2 ·cos2(x)·x 1 2 ♱·sin(x) 1 2 ♱2 ·x. Any advice on this? I'm a returning student taking calc 2 now, about 12 years after taking calc 1. 150 Limits of Trigonometric Functions Area of sector OAB Area of triangle OCP Area of sector OCP.
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