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Ostrovityanka [42]
4 years ago
5

What is cos 45º?See picture for more details ​

Mathematics
2 answers:
madreJ [45]4 years ago
7 0

Answer:

C. 1/√2

Step-by-step explanation:

cos∅ is adjacent over hypotenuse:

cos45° = 1/√2

cos45° = √2/2

Alternatively, if you learned and memorized your unit circle, cos(π/2) = √2/2

DaniilM [7]4 years ago
4 0

Answer:

C.

Step-by-step explanation:

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Estimate the value of 1573 + 1211<br> - 697.
Mumz [18]

Answer:

2100

Step-by-step explanation:

6 0
3 years ago
Show work ! please !!!!!!
Law Incorporation [45]

Sin A =  opp/hyp = 4/5

Cos A = adj/hyp =  3/5

Tan A = opp/adj =  4/3

Cos 27 = 0.8910065...  --> 0.89

You can just plug that into your graphing calculator, just make sure the degree mode is on.

3 0
3 years ago
A boy walks 58 feet up a ramp having a 22.5 degree inclination. how high is he standing from the ground?
yKpoI14uk [10]

Boy is 22.5 feet high from the ground

The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec). In geometry, trigonometry is a branch of mathematics that deals with the sides and angles of a right-angled triangle. Therefore, trig ratios are evaluated with respect to sides and angles.

The given question can be solved by sin, as value of perpendicular is to be evaluated and height and angle is provided. Let height from the ground be x

sin(22.5°) = x / 58

x = 58sin22.5 = 58(.38258)  =  22.5 feet high.

Thus the Boy is 22.5 feet high from the ground.

Learn more about trigonometry here :

brainly.com/question/26719838

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6 0
2 years ago
Which of the following is another way to show the ratio 13 to 27?
Alisiya [41]
Another ratio of 13:27 is to write it as a fraction. This is to mean;
\frac{13}{27}
7 0
4 years ago
Which of the following expressions are equivalent to (x + y) - z
andrey2020 [161]

C: None of the above

7 0
3 years ago
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