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scZoUnD [109]
3 years ago
7

Find an exact value cos 75°

Mathematics
2 answers:
Drupady [299]3 years ago
5 0

Answer:

0.2588

Step-by-step explanation:

Vikentia [17]3 years ago
4 0

Answer:

(√3 - 1) / 2√2.

Step-by-step explanation:

Using the compound angle identity

cos(A + B) = cosA cosB - sinA sinB:-

cos 75

= cos (45 + 30)

= cos 45 cos 30 - sin 45 sin 30

= 1 / √2 * √3/2 - 1 / √2 *  1 / 2

= √3 / 2√2 - 1 / 2√2

= (√3 - 1) / 2√2.

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kykrilka [37]
93 / 12 = 7.75

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if he earns $62 how many hours did he work.

so 62 = 7.75 (h)

62/ 7.75 = 8

so he worked 8 hours.
4 0
3 years ago
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I got you this is the answer Y+6=-1/2(x-4)
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If 2x+y=8 and x-1=y then what is y? Please be detailed I want to know more then just the answer but how to solve
IgorLugansk [536]
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4 0
3 years ago
Jordan already knew 2 appetizer recipes before starting culinary school, and he will learn 2 new appetizer recipes during each w
kirill115 [55]

Answer:

w=2r

r= w/2

r- w/2 = 0

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Step-by-step explanation:

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w=2r

when w= 1

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For 1st week 2 recipes are learned

when w= 2

w= 2( 2) = 4

For 2nd week 4 recipes are learned.

or

when r= 2

r= w/2

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or

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6 0
3 years ago
Look to make 10 ones or 10 tens to solve 36+23+17
Juliette [100K]
I don't know what you are asking for the first part of the question but 36+23+17 = 76

Hope this helped a little! :)
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3 years ago
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