Prove That , $\frac{ \cosec \: (90 \: + \: \theta) \: + \: \cot \: (450 \: + \: \theta ) }{ \cosec \: (90 \: - \: \theta) \: + \: \tan \: (180 \: - \: \theta) } \: + \: \frac{ \tan \: (180 \: + \: \theta) \: + \sec \: (180 \: - \: \theta) }{ \tan \: (360 \: + \: \theta) \: - \: \sec \: ( \: - \: \theta) } = 2$ ___________ No Spam !

1.Is it possible to have a triangle with the following sides?(i) 3 cm, 4 cm and 5 cm..(ii) 6 cm, 6 cm and 6 cm.(iii) 4 cm, 4 cm and 8 cm.(iv) 3 cm, 5 cm and 7 cm.​

Answers

1.
Is it possible to have a triangle with the following sides?
(i) 3 cm, 4 cm and 5 cm.
.
(ii) 6 cm, 6 cm and 6 cm.
(iii) 4 cm, 4 cm and 8 cm.
(iv) 3 cm, 5 cm and 7 cm.