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tekilochka [14]
3 years ago
13

Use basic identities to simplify the expression. cos θ - cos θ sin2θ

Mathematics
2 answers:
Fynjy0 [20]3 years ago
7 0
Cos Ф - cos Ф.sin² Ф

sin² Ф = 1 - cos² Ф
cos Ф -  cos Ф( 1-cos² Ф) = cos Ф - cos Ф  - cos³ Ф = cos³ Ф

cos Ф - cos Ф.sin² Ф = cos³ Ф
Leviafan [203]3 years ago
5 0

Answer:

answer is cos ^3 0

Step-by-step explanation:

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Jeff sells popcorn for $3 per bag. To make a profit each day, he needs to sell at least $120 worth of popcorn. He has sold $36 w
Zepler [3.9K]

Answer:

The inequality tha can be used to find how many more bags of popcorn Jeff still needs to sell today to make a profit is

x - 12 ≥ 40.

Step-by-step explanation:

Let us represent the number of bags of popcorn as p

Jeff sells popcorn for $3 per bag. To make a profit each day, he needs to sell at least $120 worth of popcorn.

We have the equation:

$3 × p ≥ $120

3p ≥ $120

p ≥ 120/3

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Hence, he has sold

$36/$3 = 12 bags of popcorn

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This equality is given as:

x - 12 bags ≥ 40 bags

x - 12 ≥ 40

x ≥40 - 12

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2 years ago
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