$$ \sqrt {sec^2{θ}+cosec^2{θ}}=?$$

Find the value of (cosA - sinA)² + (cosA + sinA)²   -

What is the value of $$ {2tan53°\over cot37°} -{cot80°\over tan10°}$$ is:

If cos θ + sin θ =m, sec θ + cosec θ =n, what is m/n?

If A and B are acute angles and Sec A =3; Cot B=4, then the value of $$ {Cosec^{2}A}+Sin^{2}B\over {Cot^{2}A+Sec^{2}B}$$ is:

If cos3A = X, then value of X?

In the given figure BC=15 cm and Sin B=4/5.  then find out the value of AB?

If 1 + sin² A = 3 sin A cos A, then what are the possible values of tan A?