Question

17.
If two vertical towers PQ and RS of
lengths a and b (a>b) respectively
subtend the same angle a at a point A on
the liné joining their feet P and R in the
horizontal plane and angles B and y at
another point B on this line nearer the
towers on the same side of the towers as
sin (B-Y
A then
sin (B-a)
is equal to
b sin a
(a - b)sin y
2)
b sin a
sin y
(a - b)sin a
3)
4)
1) Ta-b)sin y
sin a
b siny​

Answer 1

Answer:

One who causes fear: New species of dinosaur found in Argentina