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By the sine rule, sin^-1(5/13)=22.6 degrees.Equally, by the cos^-1(12/13)=tan¹(5/12)=22.6 degrees.

First of all, replace sinxcosx with 1/2 sin2x. Then you should let U=1/2 Sin2x and replace that in the formula. If y=arctan(U), then U=tany. work out dU/dy which is Sec²y. Using the trigonometr...

At prophase I of meiosis, after the homologous pair of chromosomes pair up in the process called synapsis, the non-sister chromatids overlap, forming an X-shape. They then exchange their alleles at the po...

Ohms law establishes a relationship between resistance, voltage and current, saying that V/I = R.

In order to do that, and this only works for right angled triangles, is using the sine, cosine, and tangent rules. An easy way to remember this is by using the acronym SOH, CAH, TOA that my teacher taught...