(ii)Find the value of `tan(pi/4+theta)tan(pi/4-theta)`

Find the value of tan (pi/8)

Find the value of tan((19pi)/3)

If (-pi)/(2) lt theta lt (pi)/(2) and theta ne +- (pi)/(4) , then the value of cot((pi)/(4) + theta)cot((pi)/(4)-theta) is

Find :the value of 'tan(13 pi / 12) '.

If theta=pi//4n , then the value of tan(theta) tan (2theta).....tan(2n-2)thetatan(2n-1)theta is

(i)Simplify tan(pi/4+theta)

Prove that tan((pi)/(4)+theta)-tan((pi)/(4)-theta)=2tan2theta .

Find the minimum value of 9tan^(2)theta+4cot^(2)theta .

If cos theta =7/25 and theta is an angle in the fourth quadrant, find the value of (25 cos theta -7 tan theta)/(cos theta-sin theta) .

Prove that (cos2theta)/(1+sin2theta)=tan(pi//4-theta)