Question

If coseco=-5/3 and
(180)^o<O<(270)^o, then
cose...​

Answer 1

Answer:

5

144

cosθ=±

1−sin

2

θ

=−

1−

169

25

=−

169

144

=

13

−12

(θ=III

rd

quadcosθ<9)

⇒cotθ=

sinθ

cosθ

=

4

12

,

tanθ=

cotθ

1

=

12

5

cotθ=

sinθ

1

=

5

−13

Expression=5(

25

144

)+12(

12

5

)−

13

13×5

=

5

144

.