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The magnitude of cos(135°) is the same as that of cos(45°) [cos(180° - 135°)], and the sign is negative because it is in the second quadrant of the Cartesian plane, so it's the reciprocal of the negative square root of two, about -0.707.
The cosines of 2nd- and 3rd-quadrant angles are negative, and the sines of 3rd- and 4th-quadrant angles are negative.
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What is the absolute value of 135?
Absolute value of -135 is 135.
What is the cosine of 135 degrees?
-0.7071067812, roughly.
What is the value of Cos 1?
The inverse cos of 1 is equal to o degrees. You can find this answer by knowing what angle measurement has cos equal to a value of 1.
What is cos 60?
hi,the value of cos 60 is 1/2
How do you solve sin x plus cos x equals zero?
The statement of the problem is equivalent to sin x = - cos x. This is true for x = 135 degrees and x = -45 degrees, and also for (135 + 180n) degrees, where n is any integer.
Find the exact value of cos 195?
cos(195) = -0.965925826289
What is the exact value of tan 135?
tan(135 degrees) = negative 1.
What is the exact value of cos 120?
negative one half
What is the exact value of cos 15?
It is: cos(15) = (sq rt of 6+sq rt of 2)/4
What is the exact value of cos 30?
The radical answer is sqrt(3)/2. (0.86602540378443864676372317075294)
What is cos 495 degree's?
cos(495) = cos(495-360) = cos(135) = -cos(180-135) = -cos(45) = -sqrt(1/2) or -1/sqrt(2)
What is the exact value of cos 70 degrees?
The exact value is an irrational number, and can't be written on paper with digits.0.34202 is less than 0.000042 percent wrong.Cos(70 deg) is an irrational number and it is impossible to give its exact value.
What is the exact value of cos 7.5 pie divided by 6?
1.25
What is the absolute value of 135?
Absolute value of -135 is 135.
What is the cosine of 135 degrees?
-0.7071067812, roughly.
What is the exact value of tan 330?
The inexact value of tan 330 is -0.577350, to six significant places. The exact value cannot be represented as a single number because it is a non terminating decimal. To represent it exactly, consider that tan x is sin x over cos x, and that sin 330 is -0.5 and cos 330 is square root of 0.75. As a result, the exact value of tan 330 is -0.5 divided by square root of 0.75.
What is the exact value of sin 135?
1/squareroot2 ummm, yes, but be aware that square root 2 is an irrational number that has *no* exact value. So your question cannot be answered in the terms you asked it. You can use a calculator to get as much precision as you want, but never an *exact* answer.
