Question

urgently needed

Answer 1

my idea is let tan(a) is x, so we have
x + 1/x = 2
square both sides above, what do you get then ...

Answer 2

but i think the easier way is guess directly,
we knowed that the value of tan(a) and cot(a) be 1 when a = 45 or a 225 degrees, 1 + 1 = 2

Answer 3

now you got the answer, right ?

Answer 4

\[\tan A+\cot A=2,\frac{\sin A }{ \cos A }+\frac{\cos A }{ sinA }=2\]
\[\frac{ \sin ^{2}A+\cos ^{2}A }{\cos A \sin A }=2\]
\[1=2\sin A \cos A=\sin 2A\]
\[\sin 2A=1=\sin 90,2A=90,A=45\]
i think now you can solve