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3 years ago

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

1 answer:

7 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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Will mark correct answer branliest!!!

WITCHER [35]

Answer: A = 4 P = π PS = -π/2

Step-by-step explanation:

y = A sin(Bx - C) + D where

A is the amplitude
Period = 2π/B
Phase Shift = C/B
D is the vertical shift

Given: y = -4 sin(2x + π) - 3

A (amplitude) = 4 the negative sign is a reflection, not amplitude
B = 2
C = -π
D = -3

Amplitude = 4

$\text{Period}=\dfrac{2\pi}{B}\quad =\quad \dfrac{2\pi}{2}\quad =\quad \pi$

$\text{Phase Shift}=\dfrac{C}{B}\quad =\quad \dfrac{-\pi}{2}\quad =\quad -\dfrac{\pi}{2}$

4 0

3 years ago

What is m∠PTR? a. 12 b. 40 c. 50 d. 140

nata0808 [166]

Answer:

d. 140

Step-by-step explanation:

QTR is a 180 degree angle, so we can assume PTR is 140 degrees because (x+28) is (12+28)= 40

7 0

2 years ago

(X-2)²+(y-1)²=25 how do you do this problem?

Tasya [4]

$(x-x_c)^2+(y-y_c)^2=r^2\\
(x_c,y_c) - \text{center}\\\\
(x-2)^2+(y-1)^2=25\\
\text{center}=(2,1)\\
r=\sqrt{25}=5$

5 0

2 years ago

A local fish market is selling fish and lobsters by the pound. The fish, f, costs $4.25 a pound, while the lobster, l, costs $9.

malfutka [58]

9514 1404 393

Answer:

7 pounds of fish
18.5 pounds of lobster

Step-by-step explanation:

Let x represent the number of pounds of lobster sold. Then 25.5-x is the number of pounds of fish. The total money made is ...

4.25(25.5-x) +9.00x = 196.25

4.75x + 108.375 = 196.25 . . . . . simplify

4.75x = 87.875 . . . . . . . . . . . subtract 108.375

x = 18.5 . . . . . . . . . . . . . . . divide by 4.75

The market sold 7 pounds of fish and 18.5 pounds of lobster.

8 0

2 years ago

A bathtub holds about 2 hectoliters of water. If 25 liters of water are let down the drain, how many liters of water are still i

MArishka [77]

2 hectoliters = 2 × 10 × 10 = 200 liters
200 − 25 = 175 liters

5 0

2 years ago