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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 the Area of a right angled triangle?

1/2*base of triangle*height(the perpendicular)=Area of right angled triangle

Area of a trapezoid from vertices?

  1. Use the coordinates of the vertices to establish which two sides are parallel.
  2. Find the lengths of the two parallel sides (X and Y).
  3. Find the equation of a perpendicular to one of these lines at a point P.
  4. Find the point where this perpendicular line meets the other parallel line (Q).
  5. Find the distance PQ = H.
  6. Area = 1/2*(X + Y)*H

What does an oxagon look like?

An oxagon is not a geometric shape and so does not look like anything.

A triangle has a degree of 180 if giving teo angles can you find the othe degree?

All triangles have angles that total 180degrees. If given 2 angles add them together and subtract (or take away from) 180, answer is angle.

Example A triangle has 2 angles of 90 & 30 degrees what is the 3rd angle. 90+30=120, 180-120=60degrees

How long has it been sine the us tried someone for piracy?

29 seconds ago. Exactly. And dude, work on your spelling!

A regular pentagon with perimeter 60 and apothem x. Find the area?

A pentagon has 5 sides. The perimeter is 60 so each of its sides is 60/5=12.

Area = n (s/2)^2 / tan( π /n)

= 5(12/2)^2 / tan ( π /5)

= 247.7487

How is trigonometry useful?

Trigonometry is useful in buliding, amongst other professions and industries. Trigonometry is a branch of mathematics that deals with triangles, specifically right-angled triangles. It can be used to measure the angles of a triangle as well as all three sides, as long as two measurements are given.

What is the cartesian system used for?

The Cartesian system allows you to describe a geometric shape in algebraic terms. This allows algebraic techniques, such as differentiation or integration to be applied to solve problems in geometry. Conversely, geometrical results can be used to solve problems in algebra.

How do you find the area of a isoceles triangle?

Multiply half of the length of the base by the height.

Just like any other triangle.

How is trigonometry used in the job of an oceanographer?

First, they contact Darth Vador. When he arrives, they locate the secret banana together and attach a string to it. They throw it into the ocean, and use trigonometry to locate dolphins. Then the fly off into space, and defeat Luke Skywalker.

What are the Names of all trigonometry functions?

The basic functions are sine, cosine, tangent, cosecant, secant and cotangent. In addition, there are their inverses, whose full names use the prefix "arc" [arcsine, arc cosine, etc] but are more often written as sin-1, cos-1 and so on.

How do you calculate a dish end dimensions?

Determine the volume of a dished head.

T Head thickness, after forming Sp Spherical radius, internal Kr Knuckle radius, internal D Outside Head diameter Sf Straight flange

Internal diameter, id = D - ( 2 x T )

Head depth (less straight flange), Hd = Sp - Sqrt( [ ( Sp - Kr ) 2 - ( ( id /2 ) - Kr ) 2 ]

Knuckle, included angle = ArcSin( ( Sp - Hd ) / ( Sp - Kr ) )

Depth of Knuckle Section, H1 = Kr x Sin( Knuckle included angle )

Depth of Spherical Section, H2 = Hd - H1

Temporary variable, A = ( id / 2 ) - Kr

Temporary variable, B = Sqrt( Kr2 - H12 )

Diameter where spherical radius intersects the knuckle radius, D2 = id - ( 2 x Kr ) + ( 2 x B )

Volume1 = Pi x A x H1 x [ A + Sqrt( Kr2 - H12 ) ] + [ Pi x ( Kr2 ) x [ H1 + [ A x ArcSin( H1 /Kr ) ]] - [ ( Pi /3 ) x H13 ]]

Volume2 = H22 x Pi [ Sp - ( H2 /3 ) ]

Volume3 = [ ( id2 x Pi ) /4 ] x Sf ...volume contained in straight flange

Hv, head volume ( not including straight flange portion )

Hv = ( Volume1 + Volume2 ) /1000000

Total Head volume, mm² = ( Volume1 + Volume2 + Volume3 ) /1000000

How many degrees in a hectagon?

Total is 17640 degrees

Each angle is 176.4 degrees.

Uses of trigonometric functions in real life situations?

Can you use trigonomic functions in real life situations? It's not like you carry a calculator with you everywhere...

Very unlikely unless you have a job that requires trig skills.

What are trigonometric functions?

Let's look at right triangles for a moment. In any right triangle, the hypotenuse is the side opposite the right angle. There exist three ratios (and their inverses) as regards the length of the sides of the right triangle. These are opposite/hypotenuse (called the sine function), adjacent/hypotenuse (called the cosine function), and opposite/adjacent (called the tangent function). The inverse of the sine is the cosecant, the inverse of the cosine is the secant, and the inverse of the tangent is the cotangent. The abbreviations for these functions are, sin, cos, tan, csc, sec and cot, respectively.

What is underneath this idea is that for any (every!) right triangle, there is a fundamental relationship or ratio between the lengths of the sides for all triangles with the same angles. For instance, if we have a triangle with interior angles of 30 and 60 degrees (in addition to the right angle), regardless of what size it is, the ratio of the lengths of the sides is always the same. And the trigonometric functions express the ratios of the lengths of the sides.

Adding and subtracting radicals?

Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered.

A part of a cicrle?

A part of a circle's circumference is an arc

Why do you need to study trigonometry?

Trigonometry is essential to the study of higher mathematics (calculus) and to the understanding of many scientific and engineering principles. Trigonometry and calculus can be used to model many shapes, motions, and functions in daily life.