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Trigonometry

Trigonometry is a field of mathematics. It is the study of triangles. Trigonometry includes planar trigonometry, spherical trigonometry, finding unknown values in triangles, trigonometric functions, and trigonometric function graphs.

3,810 Questions

What is function and relation?

All functions are relations with the condition that each element of the domain is paired with only one element of the range. A relation is any pairing of numbers from the domain to the range.

Which two trigonometric functions are used for analyzing vectors?

You usually need all three primary functions.

The sine and cosine functions are used to resolve the vector along orthogonal axes, and the tangent function is used to find its direction.

How do you draw a perfect circle?

Get a cup or bottle somethig round orrr... you can stick a hole in the middle with a thumbtack in it with string on the thubtack conected to the pen (or pencil) and go around:)

What is the cosine of 10?

The cosine of 10 degrees is 0.9848, approximately. The cosine of 10 radians is roughly -0.8391

What is the new URL for netives marbles?

The site is down for the moment. It happens a lot.

Can someone verify that sec4 theta-sec2 theta equals tan4 theta plus tan2 theta?

sec4(Θ) - sec2(Θ) = tan4(Θ) + tan2(Θ)

Factor each side: sec2(Θ) [sec2(Θ) - 1] = tan2(Θ) [tan2(Θ) + 1]

Use the identitiy: 1 + tan2(Θ) = sec2(Θ)

We can also write it as: tan2(Θ) = sec2(Θ) - 1

Substitute the first form of the identity in the right side: sec2(Θ) [sec2(Θ) - 1] = tan2(Θ) sec2(Θ)

Substitute the second form of the identity in the left side: sec2(Θ) tan2(Θ) = tan2(Θ) sec2(Θ)

Is that close enough for you ?

Is it worth a trust point ?

Cos 5t cos 3t -square root 3 2 - sin 5t cos 3t?

The answer to the math question Cos 5t cos 3t -square root 3 2 - sin 5t cos 3t equals 0. In order to find this answer you will have to find out what each letter is.

What is exact value sin480degrees?

sin 480° is equal to sin 60°, which is sqrt(3)/2 or approximately 0.866.

How do you find the radius of a sphere that has a ratio of 1 to 2 for volume and surface area?

Surface area of sphere is 4 x pi x r x r

Volume of sphere is (4/3) x pi x r x r x r

Hence ((4/3) x pi x r x r x r) / (4 x pi x r x r) = 1/2

((4/3) x r) / (4) = 1/2

(1/3) x r = 1/2

r = 1 and 1/2

What is the formula in finding the height of a triangle?

NOTE: only works for isocoles (at least 2 sides of eqaul length and angle apart)

you need to use Pythagoras therom in the below manner:

(1/2 the base 1st to make 2 triangles)

the longest side (c) squared divided by 1/2 the base (b) squared = answer (a) squared. square root the answer to find the height

or in simpler terms

C^2/ 1/2 the base^2=A^2

C^2/B^2=A^2

which would be directly opposite to the formula a^2 * B^2 = C^2