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fiasKO [112]
3 years ago
6

Sinx=cos19∘ What is the value of x? Enter your answer in the box.

Mathematics
1 answer:
rusak2 [61]3 years ago
6 0
Remember that cos is just a translation of sin and vice versa.
So:
Sin(x) = Cos(90 - x)
Cos(x) = Sin(90 - x)

Therefore, to answer your question:
Cos(19) = Sin(90 - 19)
= Sin(71)
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In Mrs. Barrios’ 7th period, there are 9 girls and 12 boys. What ratios are equivalent to 9:12? Select all that apply
lina2011 [118]
3:4 because both numbers can be divided by 3
7 0
2 years ago
What is the a3+b3 equal to? verify by an activity
uranmaximum [27]
a³ + b³ = ( a + b ) ( a² - a b + b³ )
For example:
a = 1, b = 2
a³ + b³ = 1³ + 2³ = 1 + 8 = 9
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= 3 * 3 = 3
The formula is true. 
3 0
3 years ago
In the figure below, BCA ~ STR. Find cos C, sin C, and tan C. Round your answers to the nearest hundredth.
arsen [322]

Answer:

\sin C\approx0.85\\\\\cos C \approx0.52\\\\\tan C\approx1.63

Step-by-step explanation:

According to the trigonometric ratios in aright triangle :

\sin x =\dfrac{\text{Side opposite to x}}{\text{Hypotenuse}}\\\\\cos x =\dfrac{\text{Side adjacent to x}}{\text{Hypotenuse}}\\\\\tan x=\dfrac{\sin x}{\cos x}

Given:  ΔBCA ~ ΔSTR

Since , corresponding angles of two similar triangles are equal.

So, ∠C = ∠T                            ...(i)    [Middle letter]

In triangle STR

\sin T=\dfrac{\text{Side opposite to T}}{\text{Hypotenuse}}\\\\=\dfrac{26.4}{30.9}\approx0.85\\\\\cos x =\dfrac{\text{Side adjacent to T}}{\text{Hypotenuse}}\\\\=\dfrac{16.2}{30.9}\approx0.52\\\\\tan T=\dfrac{\sin T}{\cos T}\\\\=\dfrac{0.85}{0.52}\approx1.63  ...(ii)

From (i) and (ii), we have

\sin C\approx0.85\\\\\cos C \approx0.52\\\\\tan C\approx1.63

4 0
3 years ago
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Artyom0805 [142]
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7 0
3 years ago
Distributive property for x(11+2), please????
Hitman42 [59]

Answer: 13x

Step-by-step explanation: Multiply x to 11 and 2

11x+2x=13x

6 0
1 year ago
Read 2 more answers
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