![Prove that a cot A +b cot B + c cot C2(R r) Prove that (n - r) (T2 (T3- - Maths - Trigonometric Functions - 13760849 | Meritnation.com Prove that a cot A +b cot B + c cot C2(R r) Prove that (n - r) (T2 (T3- - Maths - Trigonometric Functions - 13760849 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5d232b77291ee.png)
Prove that a cot A +b cot B + c cot C2(R r) Prove that (n - r) (T2 (T3- - Maths - Trigonometric Functions - 13760849 | Meritnation.com
![i) If tanA-tan B=x and cot B- cot A=y. Prove that cot(A-B)=1/x + 1/y. (ii) If 2 cos A = x+1/x, 2 cos B = y + 1/y, then show that 2 i) If tanA-tan B=x and cot B- cot A=y. Prove that cot(A-B)=1/x + 1/y. (ii) If 2 cos A = x+1/x, 2 cos B = y + 1/y, then show that 2](https://d10lpgp6xz60nq.cloudfront.net/question-thumbnail/en_127336804.png)
i) If tanA-tan B=x and cot B- cot A=y. Prove that cot(A-B)=1/x + 1/y. (ii) If 2 cos A = x+1/x, 2 cos B = y + 1/y, then show that 2
![BEGINNER'S BOX-1Question based on Significant Figures1. The error in the measurement of volume of sphere is 1.5%. the error in the measurement of its diameter is(A) 1% (B) 2% (C) 0.5% (D) BEGINNER'S BOX-1Question based on Significant Figures1. The error in the measurement of volume of sphere is 1.5%. the error in the measurement of its diameter is(A) 1% (B) 2% (C) 0.5% (D)](https://wb-qb-sg-oss.bytededu.com/material/2925/2020082003113301010402802129001BAD.jpg)
BEGINNER'S BOX-1Question based on Significant Figures1. The error in the measurement of volume of sphere is 1.5%. the error in the measurement of its diameter is(A) 1% (B) 2% (C) 0.5% (D)
Prove that : (cos A + cos B)/(cos B- cos A) = cot ((A+B)/2)cot((A-B)/2) - Sarthaks eConnect | Largest Online Education Community
![Compound Angle: Defintion, Formulas, Derivation and Understanding! | sin(A+B), cos(A-B), tan(A+B), cot(A-B) | Trigonometry | Sci-Pi Compound Angle: Defintion, Formulas, Derivation and Understanding! | sin(A+B), cos(A-B), tan(A+B), cot(A-B) | Trigonometry | Sci-Pi](https://1.bp.blogspot.com/-BC7XO5_J2us/Xqbch4MpBJI/AAAAAAAAJKQ/XAmAvXIZ0a0DKlYvl5Ng72xBHdekD5RSQCLcBGAsYHQ/s1600/qsk.png)
Compound Angle: Defintion, Formulas, Derivation and Understanding! | sin(A+B), cos(A-B), tan(A+B), cot(A-B) | Trigonometry | Sci-Pi
![SOLVED:0.5. (a) If AB, BC and regular polygon of 18 sides. (10) CD are three adjacent sides of Calculate the following angles () ABC (ii) ACD (b) Using ` (10) inverse trigonometric SOLVED:0.5. (a) If AB, BC and regular polygon of 18 sides. (10) CD are three adjacent sides of Calculate the following angles () ABC (ii) ACD (b) Using ` (10) inverse trigonometric](https://cdn.numerade.com/ask_images/50e8be2945b84904a6cb0f49f8c86ff1.jpg)