Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because sine is negative in the third quadrant. The exact value of sin(π 4) sin (π 4) is √2 2 2 2. The result can be shown in multiple forms. −0.70710678… - …

Multiply 5 5 by 45 45. Convert to a decimal. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

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\cos(\pi +\frac{\pi }{4})=\cos(\pi )\cos(\frac{\pi }{4})-\sin(\frac{\pi }{4})\sin(\pi ) 使用 \cos(x+y)=\cos(x)\cos(y)-\sin(y)\sin(x) (其中 x=\pi 及 y=\frac{\pi }{4}) 来获得结果。 -\cos(\frac{\pi }{4})-\sin(\frac{\pi }{4})\sin(\pi )

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the third quadrant. The exact value of cos(π 4) cos (π 4) is √2 2 2 2. The result can be shown in multiple forms. −0.70710678… - …

Cos 5pi/4 degrees is the value of cosine trigonometric function for an angle equal to 5pi/4. Understand methods to find the value of cos 5pi/4 with examples and FAQs.

What is the value of sin ( (5pi)/4) ?

2021年4月24日 · Il faut à partir du point I, reporter un arc de cercle orienté mesurant -\frac{5\pi}{4}. Comment procéder ? \frac{5\pi}{4} correspond à 5 fois \pi divisé par 4 .

Notation: 4.9 sur 5 (55 évaluations) Trigonométrie Exemples La valeur exacte de sin(π4) sin ( π 4 ) est √22 . Le résultat peut être affiché en différentes formes.

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