(8) if `tan x=(5)/(12)` ,then find the value of sinx

If sinx=(5)/(13) and cosx=-(12)/(13) , find the value of sin 2x.

Find the value of tan 22.5^@

If tan1^(@)tan2^(@)tan3^(@)tan4^(@). . .tan89^(@)=x^(2)-8 , then find the value of x.

Find the value of tan22.5^(@)

Find the value of tan22.5^(@)

If theta lies in the second quadrant and tan theta=(-5)/(12) , find the value of (2cos theta)/(1-sin theta) .

If tan A=5/12, find the value of (sin A+cos A) sec A

if int 1/(1+sinx)dx = tan(x/2+a) + C then find the value of a

If the sum of all value of x satisfying the system of equations tan x + tan y+ tan x* tan y=5 sin (x +y)=4 cos x * cos y is (k pi )/2 , where x in (0, (pi)/(2)) then find the values of k .

If (a-b), a and (a+b) are zeroes of 2x^(3)-12x^(2)+5x-1 , then find the value of a.