" 12.If "tan A=(17)/(18),tan B=(1)/(35)" then "cos(A+B)" is "

If Tan A = (17)/(18), TanB = (1)/(35) then Cos (A+B) =

If tan A =18//17 , tan B=1//35 then tan (A-B)=

if 3tan A tan B=1 then 2cos(A+B)

If tanA=18/17 and tanB=1/35 prove that tan(A-B)=1

If tan A=(1-cos B)/(sin B), then tan2A=tan B

If tan A=(x sin B)/(1-cos B)tan B=(y sin A)/(1-y cos A) then (x)/(y)=

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 tan A=1 and tan B=sqrt(3), evaluate cos A cos B-sin A sin B

2tan A tan B = 1rArr (cos (AB)) / (cos (A + B))

If tan A= (1- cos B)/(sin B), then tan 2A is equal to