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What is cosine of 23 degree angle?
This can be done on a graphing calculator by making sure you have your calculator in degrees mode, and then tentering the cos(23). You get an answer of 0.9205048535.
What is this expression as the cosine of an angle cos30cos55 plus sin30sin55?
cos(30)cos(55)+sin(30)sin(55)=cos(30-55) = cos(-25)=cos(25) Note: cos(a)=cos(-a) for any angle 'a'. cos(a)cos(b)+sin(a)sin(b)=cos(a-b) for any 'a' and 'b'.
Prove that sin 90 equals cos 50sin 40- cos 40 sin 50?
Sorry, but cos(50)sin(40) - cos(40)sin(50) is -0.1736, which is not even close to sin(90) which is 1.This does not work in radians, either. Please restate your question.
What is a quadrantal angle?
A Quadrantal angle is an angle that is not in Quadrant I. Consider angle 120. You want to find cos(120) . 120 lies in quadrant II. Also, 120=180-60. So, it is enough to find cos(60) and put the proper sign. cos(60)=1/2. Cosine is negative in quadrant II, Therefore, cos(120) = -1/2.
What Is the value of cos?
Cos is the ratio between adjacent side (of the given angle thieta) to the hypotenuse of the triangle.
What shape has a 40 degree angle?
Any polygon can have a 40-degree angle. It doesn't have to, but it can.
What is the cosine of 40?
In degree mode. cos(40) = 0.7660444431 degrees ( 77 degrees will do ) In radians. cos(40) = - 0.6669380617 radians
A 40 degree angle is the of a 50 degree angle?
A 40 degree angle is the COMPLEMENT of a 50 degree angle.
What is the cosine of a 50 degree angle?
cos(50) = 0.6428 (rounded)
How do you construct 40 degree Angle?
A 40 degree acute angle can be constructed with a straight edge and a protractor.
If theres a 90 degree angle and a 40 degree angle what is the other angle?
Fifty degrees. 90+40+90=180
What is a 40 degree angle?
A 40 degree angle is an acute angle, since all angles less than 90 are acute.
What is the cos of a 45 degree angle?
cos 45o = 1/√2 = 1/2 x √2 ≈ 0.707
What is a 40 degree angle called?
It is an acute angle.
What is the supplementary angle of a 40 degree angle?
140o
What is the cosine of a 65 degree angle?
Cos(65 deg) = 0.4226 approx.
What is the measure is the angle that is a complement of angle A 40 degree?
90 - 40 = 50 degrees.
