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3 years ago

Prove that sin(x)/1-cos(x) = 2 · csc(x) using trigonometric identities. Show all steps taken.

Mathematics

1 answer:

Gwar [14]3 years ago

7 0

Answer:

Step-by-step explanation:

sin(x) + tan(x)=sin(X) + sin(x)/cos(x)

=sinx(1+1/cosx)

=sinx(1+secx)

=1+secx/cosecx. (Since sinx=1/cosecx)

Hence LHS=RHS proved

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riadik2000 [5.3K]

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subtract x

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divide by 3

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3 years ago

If n = 5 and r = 3 Find "Cr.

Marat540 [252]

Answer:

Cr = 10

Step-by-step explanation:

To calculate combinations we use the nCr formula: nCr = n! / r! * (n - r)!, where n = number of items, and r = number of items being chosen at a time.

$C(n,r)=[?]$

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[RevyBreeze]

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3 years ago

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ser-zykov [4K]

Answer:

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Then 4w + 2w = 100 inches;

6w = 100 inches;

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Step-by-step explanation:

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3 years ago

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inn [45]

Answer:

x=-3, y=-6. (-3, -6).

Step-by-step explanation:

-4x+y=6

-5x-y=21

--------------

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