Question

If cosA=-12÷13 and A is in quadrant 3, find the value of 2cosA-3cosA÷1+2tanA

Answer 1

Answer:

If cos A = –12/13 and cot B = 24/7, where A lies in the second quadrant and B in the third quadrant, find the values of the following: (i) sin (A + B) (ii) cos (A + B) (iii) tan (A + B)Read more on Sarthaks.com - https://www.sarthaks.com/654582/cos-cot-where-lies-the-second-quadrant-and-the-third-quadrant-find-the-values-the-following