If sin A=$${6\over 7}$$, then what is the value of sec A?

What is the value of cosecA(1 − cosA)(cosecA + cotA)?

The value of sin 73⁰ + cos 137⁰ is:

If sinθ – cosθ = 7/13 and 0⁰ < θ < 90⁰ , then the value of sinθ + cosθ is :

For any real value of $${\sqrt {secθ-1}\over \sqrt {secθ+1} }=?$$

If 2sinθ+cosθ= $${7\over3}$$ then the value of (tan²θ-sec²θ) is

The numerical value of $$ {1\over 1+cot2}+{3\over 1+tan^2θ}+2sin^2θ$$ will be 

The greatest value of $$ Sin^{4}θ+Cos^{4}θ $$ is: