$$(1+tan θ+secθ)(1+cotθ-cosecθ)\over (sec θ+tan θ)(1-sin θ) $$ is equal to :

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

If is a positive acute angle and 5 cosθ + 12 sinθ = 13, then find the value of cosθ?

The value of sin 73⁰ + cos 137⁰ is:

The elimination of θ from x cosθ-y sinθ=2 and x sinθ + ycosθ = 4 will give

Select the INCORRECT formula from the following options.

if 2sinθ + 2sin²θ = 2, then the value of 2 cos⁴θ + 2cos²θ is:

Find the value of sin (1920°)