(b+c)/12 = (c+a)/13 = (a+b)/15 , prove that cosA/2 = cosB/7 = cosC/11 - Maths - Trigonometric Functions

Question

(b+c)/12 = (c+a)/13 = (a+b)/15 , prove that cosA/2 = cosB/7 =
cosC/11

Rishabh Mittal · Accepted Answer

Dear Student ,

Please follow the solution of part (2) in given link :

https://www meritnation
com/ask-answer/question/1-in-a-hostel-there-are-400-student-out-of-these-250-take-t/math/3441472
Hope this information will clear your doubts about the topic
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