The exact value of cos(45) cos (45) is √2 2 2 2. The result can be shown in multiple forms. 0.70710678… 0.70710678 … Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a …

Cos 315 degrees is the value of cosine trigonometric function for an angle equal to 315 degrees. Understand methods to find the value of cos 315 degrees with examples and FAQs. Grade

cos315°=cos(315-360)=cos(-45°)=√2/2 cot（-690°）=cot(-690+720)=cot30°=√3

2023年4月23日 · 315°表示一个角度向负数的方向旋转315度，cos（315°）即表示这个角度的余弦值。 利用三角函数的定义和三角恒等式，可以求得cos（315°）的值为√2/2，约等于0.707。

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要获得315度的三角函数值，首先需要将315度转化为弧度。 一周的度数为360度，即360度=2π弧度，因此可以通过下面的等式将度数转化为弧度： 弧度=(度数*π)/180

Use our cos(x) calculator to find the cosine of 315 degrees - cos(315 °) - or the cosine of any angle in degrees and in radians.

The cos of 315 degrees is √ (2)/2, the same as cos of 315 degrees in radians. To obtain 315 degrees in radian multiply 315° by π / 180° = 7/4 π. Cos 315degrees = cos (7/4 × π). Our results of cos315° have been rounded to five decimal places.

2025年2月21日 · 315 degrees lies in the fourth quadrant. The reference angle is 360° - 315° = 45°. The cosine of 45° is √2/2 or approximately 0.707. In the fourth quadrant, the cosine function is positive. Therefore, cos 315° = √2/2. cos 315° = √2/2 (approximately 0.707) The unit circle is a valuable tool for understanding trigonometric functions.

2015年7月18日 · Find 6 trig functions of (315) This is one of the usual suspects, −45∘, in the fourth quadrant, positive cosine, negative sine: cos(315∘) = 1 √2. sin(315∘) = − 1 √2. tan315∘ = − 1. sec315∘ = √2. csc315∘ = − √2. cot315∘ = − 1.