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lara [203]
4 years ago
13

HELP!!!!! You will receive Branliest! Solve the proof using the identities. Make sure to only solve the left side, leave the rig

ht side as is.\frac{1-sin^{2}\beta}{cos^{2}\beta-1} = -cot^{2} \beta
Mathematics
1 answer:
WINSTONCH [101]4 years ago
8 0

Answer:

<em>Proven</em>

Step-by-step explanation:

The given identity is

\frac{1-sin^2\beta }{cos^2\beta -1}=-cot^2\beta

We use the fundamental trigonometric relationship

sin^2x+cos^2x=1

Or equivalently

sin^2x=1-cos^2x

cos^2x=1-sin^2x

Using them in the left hand side

\frac{1-sin^2\beta }{cos^2\beta -1}=\frac{cos^2\beta }{-sin^2\beta}=-\left ( \frac{cos\beta }{sin\beta} \right )^2=-cot^2\beta

Hence proven

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Jack collected 18 ten-dollar bills while selling tickets for a show. He gave 16 of the bills to the theater and kept the rest. H
Sholpan [36]

Answer:

$20

Step-by-step explanation:

18 ten-dollar bills = 18×10

18×10=$180

He gave 16 of the bills = 16×10

16×10=$160

Now, the question is asking how much money he kept. This refers to the total amount of money, not just how many bills he kept.

(18×10) - (16×10)

180 - 160 = 20

Therefore, Jack kept $20 from selling the tickets.

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3 years ago
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Answer:

<h2>13</h2>

Step-by-step explanation:

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