Question

The value of (tan2 45* _cos2 60*) is?

Answer 1

Answer:

The answer is $\dfrac{3}{4}$

Step-by-step explanation:

•   using $\tan45^\circ=1$ and $\cos 60^\circ=\dfrac{1}{2}$

                $\tan^245^\circ-\cos^260^\circ$

              $=(\tan 45^\circ)^2-(\cos 60^\circ)^2\\=(1)^2-(\frac{1}{2})^2\\=1-\frac{1}{4}=\frac{4-1}{4}=\frac{3}{4}$