Per NCERT Example 3.6 (Galileo's theorem), launch angles (45° + α) and (45° − α) give which property of their ranges?
AEqual height
BEqual range
CDifferent ranges
DEqual time of flight
Answer & Solution
Correct answer: B. Equal range
NCERT Ex 3.6: sin(90° + 2α) = sin(90° − 2α), so R is identical for complementary angles. Stated by Galileo in Two New Sciences.
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