[" if "cos B=(-12)/(13)],[" The the value of "cos A=?]

If sin A = 12/13 , then find the value of cos A.

If sin A = (3)/(5) and cos B = (12)/(13) . Then the value of (tan A - tan B)/(1 + tan A tan B) is equal to

If cosec theta=(13)/(12) then find the value of cos theta .

If cosA=4/5 and cosB=12/13 , then find the values of cos(A+B) and sin(A-B) , where A , B ((3pi)/(2) to 2pi ) .

In a triangle ABC, if (b+c)/(11) =(c+a)/(12) =(a+b)/(13), then the value of cos C is-

If sin theta = 12/13 , find the values of cos theta and tan theta . OR If cosec theta = 13/12 , then find the value of cos theta .

If 5sin x+12cos x=13, then the value of 12sin x-5cos x lies in the integeral

If sin alpha=15/17 and cos beta=12/13 , find the values of : cos (alpha-beta) .

If cos ec theta=(13)/(12), find the value of (2sin theta-3cos theta)/(4sin theta-9cos theta)

If sin theta=12/13 then find the values of cos theta and tan theta