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What the only formula you can find the exact value of cosine 30?
Wiki User
∙ 10y ago
Cosine(30) = sqrt(3)/2
Wiki User
∙ 10y ago
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How to find the exact value of arc sine and cosine and tangent?
mostly it comes from memorization. If sin 30 = 1/2, then arcsin (1/2) = 30
How do you find the exact value with percent error and your result?
To find the exact value you could:use exact values rather than estimates - as inputs;use exact formula instead of approximations,use calculus.There are other methods as well and the choice depends on the circumstances. Then, if Y is your value and E is the exact value,percentage error = 100*(Y - E)/E or 100*(Y/E - 1).
What is the Formula for cosine in a triangle?
a^2=b^2+c^2-2bc+cos(alpha) to find the length of minor arc.
What to do when you have the hypotenuse and angle?
For trigonometry if you have the value of the hypotenuse and the angle, it depends what side you are trying to find. If you are looking for the side across from the angle, the formula is sine(angle)=opposite side divided by hypotenuse. If you are looking for the side adjacent to the angle, the formula is cosine(angle)=adjacent side divided by hypotenuse. Hope this helps!
How do you find the angle of a cosine?
You mean, you have the cosine, and want the angle? That is called arc-cosine, often written as cos-1x. Your scientific calculator should have a "shift" key or something similar, which you press, followed by the cosine key. That will give you the inverse cosine or arc-cosine.
How to find the exact value of arc sine and cosine and tangent?
mostly it comes from memorization. If sin 30 = 1/2, then arcsin (1/2) = 30
How do you find the exact value with percent error and your result?
To find the exact value you could:use exact values rather than estimates - as inputs;use exact formula instead of approximations,use calculus.There are other methods as well and the choice depends on the circumstances. Then, if Y is your value and E is the exact value,percentage error = 100*(Y - E)/E or 100*(Y/E - 1).
How do you find the cosine of a triangle?
For the length you apply this formula, after numbering the sides a²=b²+c²-2bcCosA
What is the half angle formula to find the exact value for tan 165?
tan u/2 = sin u/1+cos u
What is the Formula for cosine in a triangle?
a^2=b^2+c^2-2bc+cos(alpha) to find the length of minor arc.
What to do when you have the hypotenuse and angle?
For trigonometry if you have the value of the hypotenuse and the angle, it depends what side you are trying to find. If you are looking for the side across from the angle, the formula is sine(angle)=opposite side divided by hypotenuse. If you are looking for the side adjacent to the angle, the formula is cosine(angle)=adjacent side divided by hypotenuse. Hope this helps!
How do you find the cosine and the sine?
Sine= Opposite/ Hypotenuse Cosine= Adjacent/ Hypotenuse
Find exact value of sec 4pi divided by 3?
The exact value of sec 4pi divided by 3 is 1/3.
How do you find the angle of a cosine?
You mean, you have the cosine, and want the angle? That is called arc-cosine, often written as cos-1x. Your scientific calculator should have a "shift" key or something similar, which you press, followed by the cosine key. That will give you the inverse cosine or arc-cosine.
Identities to find the exact value of sin 75?
what is the value of sin 75 degree
What is the formula to find x value?
The formula to find the value of X would be Y-2X. This would equal to y-9 times 2 X.
Could you find the circumference of a circle using the exact value for pi?
Yes, you could if you knew the exact value for pi as well as the diameter of the circle. Multiply the diameter by the exact value for pi to get the circumference. However, it is impossible because the exact value for pi is not known. It is only known to about a trillion decimal places, but the exact value is not known.
