Special right triangles (45-45-90 and 30-60-90)HSG.SRT.C.6Find missing sides of 45-45-90 and 30-60-90 triangles exactly, using the side ratios 1 : 1 : √2 and 1 : √3 : 2.Trigonometric ratios (sine, cosine, tangent)HSG.SRT.C.6Write the sine, cosine and tangent of an acute angle in a right triangle as fractions, including when one side must first be found.Solving right triangles with trigonometryHSG.SRT.C.8Use sine, cosine and tangent to find a missing side of a right triangle, and inverse trigonometry to find a missing angle.Law of sines and law of cosinesHSG.SRT.D.11Find missing sides and angles of any triangle with the law of sines and the law of cosines.