![Elements of plane and spherical trigonometry . angle is the reciprocal of thetangent of the angle. Thus, cot A AG AGXBG B,G etc. (8) The secant (sec) of an angle is Elements of plane and spherical trigonometry . angle is the reciprocal of thetangent of the angle. Thus, cot A AG AGXBG B,G etc. (8) The secant (sec) of an angle is](https://c8.alamy.com/comp/2CE0K06/elements-of-plane-and-spherical-trigonometry-angle-is-the-reciprocal-of-thetangent-of-the-angle-thus-cot-a-ag-agxbg-bg-etc-8-the-secant-sec-of-an-angle-is-the-reciprocal-of-the-cosineof-the-angle-thus-sec-a-=-=-a5l-=-etc-9-ag-abx-the-cosecant-esc-or-cosec-of-an-angle-is-the-reciprocal-of-the-sine-of-the-angle-thus-esc-a-=-ab-ab-bg-a-etc-10-the-trigonometric-functions-17-besides-these-six-functions-there-are-two-others-of-less-fre-quent-occurrence-called-the-versedsine-vers-and-coversedsinecovers-they-are-defined-by-the-following-equations-vers-a-=-1-c-2CE0K06.jpg)
Elements of plane and spherical trigonometry . angle is the reciprocal of thetangent of the angle. Thus, cot A AG AGXBG B,G etc. (8) The secant (sec) of an angle is
![The resistivity ρ(T /I) and cotangent of the Hall angle cot ΘH(T 2 /I 2... | Download Scientific Diagram The resistivity ρ(T /I) and cotangent of the Hall angle cot ΘH(T 2 /I 2... | Download Scientific Diagram](https://www.researchgate.net/profile/A-Mikheenkov/publication/1856383/figure/fig2/AS:649633202184240@1531896033538/The-resistivity-rT-I-and-cotangent-of-the-Hall-angle-cot-THHT-2-I-2-at-10-T-upper.png)
The resistivity ρ(T /I) and cotangent of the Hall angle cot ΘH(T 2 /I 2... | Download Scientific Diagram
![Elements of plane and spherical trigonometry . , and esc negative,and tan and cot positive. In the fourth quadrant x is positive and y is negative.Hence in this quadrant the negative Elements of plane and spherical trigonometry . , and esc negative,and tan and cot positive. In the fourth quadrant x is positive and y is negative.Hence in this quadrant the negative](https://c8.alamy.com/comp/2CE0JN1/elements-of-plane-and-spherical-trigonometry-and-esc-negativeand-tan-and-cot-positive-in-the-fourth-quadrant-x-is-positive-and-y-is-negativehence-in-this-quadrant-the-negative-functions-will-be-sin-tancot-and-esc-and-the-positive-ones-will-be-cos-and-sec-these-results-are-summarized-in-the-following-table-this-and-the-three-following-formulas-are-numbered-to-correspondwith-thosein-17-with-which-they-are-identical-the-trigonometric-functions-31-angle-=-0-j0-90-180-180-270-270-360-sin-cos-tan-cot-sec-csc-2CE0JN1.jpg)
Elements of plane and spherical trigonometry . , and esc negative,and tan and cot positive. In the fourth quadrant x is positive and y is negative.Hence in this quadrant the negative
![Elements of plane and spherical trigonometry . tan a . (1) sin2 d . tan 0 (2) sec a cos 0 cot (3) cot2 x +tan2 a; (4) sin y cos Elements of plane and spherical trigonometry . tan a . (1) sin2 d . tan 0 (2) sec a cos 0 cot (3) cot2 x +tan2 a; (4) sin y cos](https://c8.alamy.com/comp/2CE0JNB/elements-of-plane-and-spherical-trigonometry-tan-a-1-sin2-d-tan-0-2-sec-a-cos-0-cot-3-cot2-x-tan2-a-4-sin-y-cos-y-tan-y-cot-y-18-reduce-the-following-to-expressions-containing-only-thetangent-of-the-angle-1-tan-x-f-1-cot-x-1-3-1-cos-0-1-cos-0-4-sin-fgt-cos-cos-0-tan-2-cot-sec-8-f-tan-0-cot2-0-1a-cot-0-sin-0-esc-3-28-functions-of-90-f-0-180-0-270-0-in-termsof-d-all-mathematical-tables-give-the-trigonometric-func-tions-of-angles-only-up-to-90-but-in-practice-we-are-con-stantly-meeting-with-angles-greater-than-90-i-2CE0JNB.jpg)