Question

Need the answer to number 4

Answer 1

Answer is B. CSC ∅ = √85 /2

Explanation:

CSC = 1 / Sin ∅

So first find Sin ∅ = 2 / √ 85 and then substitute in the formula

And oh, in case you're wondering, √ 85 is the hypotenuse side which you find like this:

√ 9² + 2²

√ 81 + 4

√ 85

Answer 2

`√(85)` /2

Explanation:

lets find hypotenuse( longest side) first

let other two samller sides be a and b and hypotenuse be c

pythagorsd theorem

a^2 + b^2 =c^2

9^2 + 2^2 =c^2

81 + 4=c^2

85 =c^2

`√(85)` =c

take theta as reference angle

cosec theta=hypotenuse/opposite

=
`√(85)` / 2