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r-ruslan [8.4K]
2 years ago
10

Prove that sec^2θcosec*2θ-2-cot^2θ=tan2θ

Mathematics
1 answer:
Tema [17]2 years ago
5 0

Answer:

Step-by-step explanation:

I think you mean tan^2θ, not tan2θ.

Use the trigonometric identities

secθ = 1/cosθ

cscθ = 1/sinθ

tanθ = sinθ/cosθ

sin²θ = 1-cos²θ

cos²θ = 1-sin²θ

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I need the answer. (will give brainliest)
MatroZZZ [7]

Answer:

6

Step-by-step explanation:

We can use ratios to solve

15 ft            18ft

---------- = -----------

5ft               x

Using cross products

15x = 5*18

15x = 90

Divide by 15

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x =6

3 0
3 years ago
Read 2 more answers
A baseball team has home games on Friday and Sunday. The two games together earn ​$3432.00 for the team. Friday​'s game generate
scoundrel [369]

Answer:

Friday's game generates $1,664 while Sunday's, game generates $1,768 for a total of $3432.00.

Step-by-step explanation:

First, identify what you know:

1) A baseball team has home games on Friday and Sunday

2) Both games, combined, earned $3432.00

3) Friday's game generated $104.00 less than Sunday's game.

We can create a formula to solve our problem!

$3,432 = x + (x - 104)

$3,432 + 104 = x + x

$3,536 = 2x

$3,536/2 = x

x = $1,768

Sunday's game earned $1,768! If Friday's game earned $104 less, then simply subtract that from Sunday's earning!

$1,768 - $104 = $1,664

Friday's game cost $1,664, and Sunday's game earned $1,768!

Hope this helps! :)

7 0
3 years ago
Read 2 more answers
Please help ASAP!!!
Svetach [21]

Answer:

B

Step-by-step explanation:

Just make sure that the x value is not being repeated twice. because one of the given points is (4,9) you cannot have the point (4,0). X value cannot repeat in a valid function.

3 0
3 years ago
-54 - 7r = -5(-2 - 5r)
makkiz [27]
-54-7r=10+25r
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3 0
3 years ago
GIVING BRAINLIEST PLEASE HELP!!
stira [4]

Answer:

Step-by-step explanation:

A=1/4πd2

A = 1/4(22/7)(18)^2

= 254.47

4 0
3 years ago
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