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Find cscx if sinx+cotx cosx= sqrt3

2 Answers

3 votes

Answer:

d.
√(3)

Explanation:

see attachment, it's correct :))

Find cscx if sinx+cotx cosx= sqrt3-example-1
User Roubachof
by
6.2k points
2 votes

Answer:

The answer is (d) ⇒ cscx = √3

Explanation:

∵ sinx + (cotx)(cosx) = √3

∵ sinx + (cosx/sinx)(cosx) = √3

∴ sinx + cos²x/sinx = √3

∵ cos²x = 1 - sin²x

∴ sinx + (1 - sin²x)/sinx = √3 ⇒ make L.C.M

∴ (sin²x + 1 - sin²x)/sinx = √3

∴ 1/sinx = √3

∵ 1/sinx = cscx

∴ cscx = √3

User Russ Egan
by
6.4k points