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Valentin [98]
2 years ago
11

(i) sin²θ + cos²θ = (ii) 1 + tan²θ = (iii) 1 + cot² θ = (iv) Sin 2 θ = ​

Mathematics
2 answers:
Vesnalui [34]2 years ago
8 0

Answer:

(i) sin²θ + cos²θ = 1

(ii) 1 + tan²θ = sec²θ

(iii) 1 + cot²θ = cosec²θ

(iv) Sin 2θ = 2 Sinθ cosθ

<u>-TheUnknownScientist</u>

iogann1982 [59]2 years ago
7 0

Step-by-step explanation:

(1) = 1

(2) = sec²θ

(3) = cosec² θ

(4) = 2 Sin θ cos

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Ivenika [448]

Answer:

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Step-by-step explanation:

let x be the number of seats in A,

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(4x+z)=13000------1

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2 years ago
Zoe shows her work in finding the solution to 9 – 7x = 7 – 4(2x 3). which choice describes the error in her solution?
FinnZ [79.3K]
I'll assume the above equation is: 9 - 7x = 7 - 4(2x+3)

* do distributive multiplication
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x = 7 - 21
x = -14

To check, substitute x by its value -14

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9 - 7(-14) = 7 -4[2(-14) + 3]
9 + 98 = 7 - 4(-28 +3)
107  = 7 - 4(-25)
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107 = 107
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Answer:

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