If $\cot ^2 \alpha+\tan ^2 \alpha=2,0^{\circ} \leq \alpha \leq 90^{\circ}$, then find the value of $a$
Answer & explanation
Correct answer: option 2
cot2α + tan2α = 2
Bu putting option 1 by 1 , only option 2 fits well .
Put α = 45°
= cot245° + tan245°
= 1 + 1
= 2
Hence α = 45°