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Now, the trigonometric identities for supplementary angles are: sin (180°- ?) = sin? cos (180°- ?) = -cos ? cosec (180°- ?) = cosec ? sec (180°- ?)= -sec ? tan (180°- ?) = -tan ? cot (180°- ?) = -cot ?

Eight fundamental identities in trigonometry are: sin ? = 1/cosec ? cos ? = 1/sec ? tan ? = 1/cot ? sin2? + cos2? = 1. tan? = sin?/cos ? 1+ tan2? = sec2? cot ? = cos?/sin? 1+ cot2? = cosec2?

The 36 Trig Identities You Need to Know.

By using a right-angled triangle as a reference, the trigonometric functions and identities are derived: sin ? = Opposite Side/Hypotenuse. cos ? = Adjacent Side/Hypotenuse. tan ? = Opposite Side/Adjacent Side.

Basic Trigonometric Function Formulas for Unit Circle sin ? = y/1 = y. cos ? = x/1 = x. tan ? = y/x. cot ? = x/y. sec ? = 1/x. cosec ? = 1/y.

The Sine of the Angle(sin A) = the length of the opposite side / the length of the hypotenuse. The Cosine of the Angle(cos A) = the length of the adjacent side / the length of the hypotenuse. The Tangent of the Angle(tan A) = the length of the opposite side /the length of the adjacent side.

The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).

Leverage = total company debt/shareholder's equity. Count up the company's total shareholder equity (i.e., multiplying the number of outstanding company shares by the company's stock price.) Divide the total debt by total equity. The resulting figure is a company's financial leverage ratio.

Combined leverage (OL + FL) represents a company's total risk related to operating leverage, financial leverage, and the net effect on the EPS.Finance managers may calculate combined leverage to make more precise decisions.

To compute a company's DFL, you must divide its earnings before interest and taxes by its earnings before taxes. For example, if a company earned $500,000 before paying interest expenses and taxes and the company pays interest expenses during the period equal to $40,000, then its DFL is equal to 1.087.