Question

if cos 3 theta=1/3 find the value of course 3 theta

plz answer me fast ​

Answer 1

Step-by-step explanation:

3cosθ=1

⇒cosθ=

3

1

⇒cos

2

θ=

9

1

⇒1−sin

2

θ=

9

1

⇒sin

2

θ=1−

9

1

⇒sinθ=

9

8

⇒sinθ=

3

2

2

⇒cosecθ=

sinθ

1

=

2

2

3

Hence, the answer is

2

2

3

.