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IrinaK [193]
3 years ago
14

Can someone help with trig identities? (calculators are allowed)

Mathematics
1 answer:
Oksana_A [137]3 years ago
8 0

Answer:

d

Step-by-step explanation:

cosA^2 = 1 - sinA^2

subtitute 1/4 below

= 1 - (1/4)^2

= 1 - 1/16

after calculation

= - 0.9682

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Marci went to the state fair with her friends. The total cost of tickets for rides is given by the equation c=2.75t where c is t
snow_tiger [21]

Answer:

  c = 55 . . . . (no units for cost are given in your problem statement)

Step-by-step explanation:

"t is the number of tickets" and "Marci bought 20 tickets", so we conclude t=20. Putting that value into the equation and doing the arithmetic, we find ...

  c = 2.75·20 = 55

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We don't know if this is pennies or pounds, dollars or rupees or pesos or euros. No monetary units are mentioned in the problem statement given here.

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3 years ago
1
Nutka1998 [239]

Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
Which statement best describes how the volume of a square-based pyramid is related to the volume of a cube?
svetoff [14.1K]

Answer:

The options are not clearly written but, the volume of square based pyramid is 1/6 the volume of a cube because each of the six faces of the cube will contain one square based pyramid.

Step-by-step explanation:

Let the length of each side of your cube be x

the height of each of the six enclosed pyramids would be x/2. So the volume of each pyramid would be given by:

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