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The following three are the reciprocals of the above ratios. Powered by Discourse, best viewed with JavaScript enabled The trigonometric ratios, sin, cos, and tan do not exactly depend upon the side lengths of the triangle but rather they depend upon the angle because ultimately, we are taking the ratio of the sides. Sin, cos, and tan table is used to find the value of these trigonometric functions for the standard angles. During calculations involving sine, cosine, or tangent ratios, we can directly refer to the trig chart given in the following section to make the deductions easier. 124. A road rises 10 feet in a horizontal distance of 400 feet. Find the angle the road makes with the horizontal to the nearest tenth of a degree. At A Level, we continue to develop understanding beyond the basic trigonometry functions of sine, cosine, and tangent. New functions that are studied include,