PRACTISING
4. The angle of elevation from the roof of a 10 m high building to the top
of another building is 41°. The two buildings are 18 m apart at the base.
a) Which trigonometric ratio would you use to solve for the height of
the taller building? Why?

1/2*qr*rs

step-by-step explanation:

answer is because 4×10=40

and 98×4= is 392

40,392

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches