If $$ {cot A={n\over{n+1}}}$$ and $$ {cot B={1\over{2n+1}}}$$ then what is the value of cot (A + B)?

If $$ {tan3A=cot{(2A+40)}}$$ then find the value of $$ {tan^2{3A}}+{cot^{4}3A}$$.

Which of the following simplification value of $$ {(secA-cosA)^{2}}+{(cosecA-sinA)^{2}}-{(cotA-tanA)^{2}}$$ ?

If a(tanθ+cotθ)=1, sinθ+cosθ=b and 0°<θ<90°, then the relation between a and b.

What is the simplification value of $${cotA+tanB}\over{cotB+tanA}$$?

If tan⁴θ + tan²θ = 1, then the value of cos⁴θ + cos²θ is

What is the value of sin² 60° + cos²30°+ cot² 45° + sec² 60° – cosec² 30° + cos² 0°.

What is the value of $$ {cosecθ\sqrt{1-cos^2θ}}$$.