" If "A+B+C=pi," and "cos A=cos B cos C," show that "2cot B cot C=1

if A+ B + C = pi, and cos A = cos B cos C, show that 2 cot B cot C=1.

If A + B + C = pi " and " cos A = cos B cos C, "show that" 2 cot B cot C = 1

If A+B+C= pi and cos A=cos B. cosC,prove that cot B cot C= 1/2

If A+B+C=pi and cos A = cos B cos C " then " cot B cot C =

If A + B + C = pi "and" cos A = cos B cos C, "show that" tan B tanC = 2

If A + B + C = pi " and " cos A = cos B cos C, "show that" tan A = tan B + tan C

If A + B + C= pi and cos A = cos B cos C, show that tan A =tan B + tan C and cot B cot C=1/2.

Statement I: If A+B+C=pi and cos A =cos B cos C then cot B cot C=1/3 Statement II : If 5 sin B=sin (2A+B) then 2tan(A+B)=3 tan A Which of the above statements is correct?

If A+B+C=pi and cos A=cos B cos C then cot B cot C=(1)/(3) If 5sin B=sin(2A+B) then 2tan(A+B)=3tan A which of the above statements is correct?

If A+B+C=pi, and cos A=cos B*cos C then cot B.cot C=