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Oksana_A [137]
3 years ago
5

If cos Θ =-4/7 , what are the values of sin Θ and tan Θ?

Mathematics
1 answer:
Zepler [3.9K]3 years ago
8 0
 given cos theta is equal to - 4/ 7 then we can conclude that theta is in the second and third quadrants. In this case, the other leg is equal to square root of (7^2 - 4^2 ) equal to square root of 33. In this case, sin theta can be equal to +- square root of 33 / 7 and tan theta is equal to +-square root of 33 / 4.


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Answer:

24 blocks will be needed to make the tower that is 4 feet high

Step-by-step explanation:

Let us use the ratio method to solve the question

∵ Charlie knows that 3 blocks are needed to make a tower that is

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∵ He needs to make a tower that is 4 feet high

→ By using the ratio method

→  Blocks  :  height (ft)

→   3          :   0.5

→   x          :   4

→ By using the cross multiplication

∵ x × 0.5 = 3 × 4

∴ 0.5x = 12

→ Divide both sides by 0.5 to find x

∵ \frac{0.5x}{0.5} = \frac{12}{0.5}

∴ x = 24

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∴ 24 blocks will be needed to make the tower that is 4 feet high

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The set of possible values of m is (5, 7, 9).
k0ka [10]

Plug in each possible value into the equation.

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2k = m + 3

2k = (5) + 3

Simplify

2k = 8

isolate the k, divide 2 from both sides

2k/2 = 8/2

k = 8/2

k = 4

When m = 5, k = 4

-------------------------------------------------------------------------------------------------------------------

2k = m + 3

when m = 7

2k = (7) + 3

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2k/2 = 10/2

k = 10/2

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when m = 7, k = 5

------------------------------------------------------------------------------------------------------------------

2k = m + 3

When m = 9

2k = (9) + 3

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2k/2 = 12/2

k = 12/2

k = 6

when m = 9, k = 6

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hope this helps

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