A projectile is fired with a constant speed at two different angles of projection, say α and β, that give it the same range. Then, α and β are such that,
A
cosecα=secβ
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
tan(α+β)→∞
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
sin2α–cos2α=sin2β–cos2β
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
sin2α+cos2α=sin2β+cos2β
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct options are Acosecα=secβ Btan(α+β)→∞ Dsin2α+cos2α=sin2β+cos2β For the same range, α+β=90∘ (or ) β=90∘−α. Choices a), b) and d) are correct as they satisfy these relations.