Three identities of trigonometry?

sin²x+ cos²x =1

sec²x - tan²x =1

cosec²x - cot²x =1

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functions.

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functions

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functionsThe reciprocal trigonometric identities are:

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functionsThe reciprocal trigonometric identities are:Sin θ = 1/Csc θ or Csc θ = 1/Sin θ

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functionsThe reciprocal trigonometric identities are:Sin θ = 1/Csc θ or Csc θ = 1/Sin θCos θ = 1/Sec θ or Sec θ = 1/Cos θ

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functionsThe reciprocal trigonometric identities are:Sin θ = 1/Csc θ or Csc θ = 1/Sin θCos θ = 1/Sec θ or Sec θ = 1/Cos θTan θ = 1/Cot θ or Cot θ = 1/Tan θ

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in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.