Neither sine nor cosine can ever exceed 1 and the closer one of them is to 1, the closer the other must be to 0. We can see this in two ways: It follows immediately from the formula. As either sine squared or cosine squared gets closer to one the amount left for the . Trigonometric Identities. Read each term card. If there are different directions (ie spell it out) follow those. sin squared x + cosine squared x. 1. 1 + cotangent squared x (spell it out) cosecant squared x. cosine squared A minus sine squared A. cos(2A) #2 (spell it out) two cosine squared A minus 1. All local maximum values are equal to 1, and they are attained at integer multiples of. local minimum values and points of attainment: All local minimum values are equal to 0, and they are attained at odd integer multiples of. points of inflection (both coordinates) odd multiples of, .

# Cos squared x minus 1

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