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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 are the types of trigonometric functions?
There are three types of trigonometric functions, they are:
1- Plane Trigonometric Functions
2- Inverse Trigonometric Functions and
3- Hyperbolic Trigonometric Functions
How do you convert orbits per minute to rotations per minute?
if sec A-tan A = a/b
find the value of cos A.
How does secx plus 1 divided by cotx equal 1 plus sinx divided by cosx?
secx = 1/cosx
and 1/cotx = tanx, therefore
1/cosx + tanx = 1 + sinx/cosx, and
sin/cos = tanx, therefore
1/cosx + tanx = 1 + tanx, therefore
1/cosx = 1, therfore
1 = cosx.
So, therfore, it is not neccesarily true.
But if you mean
secx plus 1 divided by cotx equals (1 plus sinx) divided by cosx(this is probably what you mean) Let's start over!
secx = 1/cosx
and 1/cotx = tanx, therefore
1/cosx + tanx = (1+sinx)/cosx therefore
1/cosx + tanx = 1/cosx + sinx/cosx
sinx/cosx = tanx therfore
1/cosx + tanx = 1/cosx + tanx
Do you think this is correct? Subtract both sides by 1/cosx + tanx:
0 = 0
So, therefore, this is correct!
(BTW, I'm in Grade 6! :P)
What is the period of a 8000 Hz sine wave?
The period of an 8000 Hz sine wave is 0.125 milliseconds. (1/8000)
How do you break down a one degree angle in trigonometry?
Into minutes, then seconds.
A 1 degree angle is 60", 0'
or, a 1 degree angle can be expressed as 0", 3600'
a .5 degree angle can be expressed as 30", and so on.
Why is calculus so hard especially pre calculus?
Pre-calculus is hard because it is very algebra intensive but forces you to also incorporate your geometry and trigonometry to solve complex problems. Not only this, but precalculus is designed to expose you to a few of the oddities in advanced mathmatics (holes, end behavior etc).
Calculus is then even more difficult because it differs so greatly from pre-calculus. rather than definite answers and standard functions, you now move into "theoretical math," where many problems either have very complex answers or no answer at all, and very often, you are required to prove that your answers are logical using mathematical therums. however without your strong base from pre-calculus, trying to learn these new concepts would be almost completely impossible.
My advice you anyone struggling in either calculus or pre-calculus would be to keep at it. study hard and practice as much as possible. Good luck!
What is the sine of a 11 degree angle?
You can calculate that on any scientific calculator. Just make sure that the calculator is set to "degrees". As a check, the sine of 90° should come out as exactly 1.
Whether tanning indoors or outdoors, it is important to be safe. You should NEVER overexpose yourself. It is the OVEREXPOSURE that can cause skin damage, not the exposure itself. If you are going to tan indoors, be sure to tan no more than every other day. Going every day can increase your chances of overexposure thus increasing your chances of skin damage. Don't spend more than the time recommended for you skin type in a tanning bed or too much time outside in the sun. The biggest problem among people these days is that if they pay for a 15 minute tanning bed, they expect to get 15 minutes even though they end up burning themselves. Tanning properly is a gradual process. Not an instant one.
A response to:
"you can go to a tanning bed but that can give you skin cancer"
For the record, tanning beds will not necessarily give you cancer. At least not any more than the sun. Most people who get skin cancer were most likely predisposed to get it anyway. (i.e., family history of cancer/skin cancer) Actually, most skin conditions that are diagnosed as "cancer" are really not. Only a very small percent are malignant. The rest are benign. Only the malignant ones can be considered cancer. The benefits that you get from tanning or sun exposure (such as increased Vitamin D production) are far greater than the risks.
What is connection of algebra an trigonometry in med tech?
If I give you a 600mL of medicine for 2 adults and 1 child. The child takes 37% of the adult dosage. What are the doses? .....yes, you need algebra.
If I got a beaker that is 12 mm high and the mouth opening is 2mm wide, and I ask you to give me a 41.4 cubic mm of a solution, ......yes, you will need trigonometry.
What is the characteristics properties of sine function?
Its periodicity and amplitude remain the same.
How can you write an expression for cos x in term of sin x using pythagorean theorem?
cos2 x + sin2 x = 1
cos2 x = 1 - sin2 x
What areas of math do you need the most help with?
Non-linear partial differential equations. Are you offering to help me? If not, why did you ask?
It also equals 13 12.
What is the smallest angle of a triangle with sides of 6.4 cm 8.2 cm and 5.7 cm?
The smallest angle will be opposite the smallest side of the triangle and so by using the cosine rule it works out as 43.84 degrees.
Is a tangent a trigonometric ratio?
Tangent is used in calculus to compute the slope of a curve. Because curves do not have uniform slopes, unlike lines, their slopes change. A tangent is the slope of a curve at a specific point.
What is the rule of trigonometry?
Just remember SOHCAHTOA,
SOH is using the sine, only use this when you have the Hypotenuse and the Opposite.
Sin(a)= O/H
CAH is using the cosine, only use this when you have the Hypotenuse and Adjasent.
Cos(a)=A/H
TOA is using the tangent, only use this when you have the Opposite and Adjasent.
Tan(a)=O/A
