" (1) "cot(theta-(13 pi)/(2))quad " (ii) "tan(-23(pi)/(3))

Simplify cot(theta - (13pi)/2)

Prove that tan(theta+(pi)/(6))+cot(theta-(pi)/(6))=(1)/(sin2theta-sin.(pi)/(3))

If 3cot(theta-(pi)/(12))=cot(theta+(pi)/(12))

Find the value of tan^(-1) (-tan.(13pi)/(8)) + cot^(-1) (-cot((19pi)/(8)))

Find the value of tan^(-1) (-tan.(13pi)/(8)) + cot^(-1) (-cot((9pi)/(8)))

Find the value of tan^(-1) (-tan.(13pi)/(8)) + cot^(-1) (-cot((9pi)/(8)))

sin ((pi) / (2) + theta) * cos ((3 pi) / (2) + theta) * tan ((5 pi) / (2) + theta) * cot ((7 pi) / (2) ) + theta)

If tan (pi cos theta)=cot (pi sin theta), 0ltthetalt(3 pi)/(4) then, sin (theta+(pi)/(4)) equals