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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

Which of these functions is the reflection of f of x equals x2 across the x - axis?

The question asks about "these functions". In those circumstances would it be too much to expect that you make sure that there is something that these can refer to?

How many right angles in a cube?

Infinitely many. At any of the infinitely many points along any edge, the angle between the two faces meeting at that edge is a right angle.

Where would you find the formula to calculate the volume of a cone with a 19mm diameter?

Radius of cone = 19/2 = 9.5 mm Volume = (1/3) PI r^2 h, where r is the radius and h is the height, We need to know the height of the cone to find its volume.

Can you get a tan at 77 degrees?

Yeah if you stay in the sun for 3 hours

Where does the word Depot come from?

It is from the french word 'depot' meaning deposit. As in banking or warehousing for safe keeping. France.

Are foxes clever?

Yes they can be so friendly, in fact, that you could have one as your pet!!! HOW COOL WOULD THAT BE!!!! For more fox info email me on jimmyboi14@hotmail.co.uk

What does tangent 2 x plus 1 equal?

tan(2x) = 2tanx/(1 - tan2x)

So tan(2x) +1 = 2tanx/(1 - tan2x) + 1

= 2tanx/(1 - tan2x) + (1 - tan2x)/(1 - tan2x)

= (-tan2x + 2tanx + 1)/(1 - tan2x)

An isoceles triangle has two sides of 52 and one side of 40 What are the angles?

Let the sides be abc and their opposite angles be ABC and so:

Using the cosine rule angle A = 67.38 degrees

Using the cosine rule angle B = 67.38 degrees

Angle C: 180-67.38-67.38 = 45.24 degrees

How do you solve 1 minus cosx divided by sinx plus sinx divided by 1 minus cosx to get 2cscx?

(1-cosx)/sinx + sinx/(1- cosx)

= [(1 - cosx)*(1 - cosx) + sinx*sinx]/[sinx*(1-cosx)]

= [1 - 2cosx + cos2x + sin2x]/[sinx*(1-cosx)]

= [2 - 2cosx]/[sinx*(1-cosx)]

= [2*(1-cosx)]/[sinx*(1-cosx)]

= 2/sinx

= 2cosecx

What is sec2?

sec2 = 1/cos(2) = -2.403 (radians)

What is a cotangent?

Cotangent is a trigonometric function.

It is the reciprocal of the tangent.

What is the value of the sine of 55?

Assuming you are referring to degrees; 0.81915