(iii) (– 24, – 7)
Sol. The terminal
arm passes through P (– 24, – 7)
∴ x = – 24 and y = – 7
r = √(x2+y2
)
∴r =√((-24)2+(-7)2
)
∴r =√(576+49)
∴r =√625
∴ r = 25
Let the
angle be θ
sin θ = y/r = -7/25
cosec θ = r/y = -25/7
cos θ = x/r = -24/25
sec θ = r/x
= -25/24
tan θ = y/x =7/24
cot θ = x/y = 24/7
