A=22.5° sin-?cos-? tg-?

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To find the sin, cos, and tan values of 22.5 degrees, we first need to convert the angle to radians. Using the conversion formula: radians = degrees x pi/180, we have:

22.5 degrees = 22.5 x (pi/180) = 0.3927 radians

Now we can determine the sine, cosine, and tangent of 0.3927 radians:

sin(0.3927) ≈ 0.382
cos(0.3927) ≈ 0.923
tan(0.3927) ≈ 0.4142

So, sin(22.5°) ≈ 0.3827, cos(22.5°) ≈ 0.9239, and tan(22.5°) ≈ 0.4142.