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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

In a right triangle if a equals 15in and b equals 20in what does c equal?

C = 25 in

The Pythagorean Theorem allows you to find the thrid side of a right triangle, if you know the other two sides. The formula is a2 + b2 = c2.

CALCULATIONS:

152 + 202 = c2

225 + 400 = c2

625 = c2

c = Square Root of 625

c = 25

* * * * *

There is another option: side b is the hypotenuse.

Then b2 = a2 + c2

of c2 = b2 - a2 = 400 - 225 = 175

then c = sqrt(175) = 5*sqrt(7) = 13.22876 (to 5 dp).

What is the historical background of trigonometry?

inabnu ga pangau ko answer sakon pagd kamu mangau...

Where did the word Halloween come from?

the word Halloween came from the Celts who lived 2000 years ago

How much minutes is 1000 secants?

A secant is not a subdivision of a minute.

You want maths plus one model question paper?

Plus One Mathematics question papers can be downloaded from different sites including the higher secondary board site.

Why sine ratio is the ratio of opposite side and hypotenuse?

Because that is accepted definition. The sine is opposite over hypotenuse, or Y in the unit circle. The cosine is adjacent over hypotenuse, or X in the unit circle. The tangent is sine over cosine, etc. For more information, please see the related link below.

Where did tetrahedrons come from?

Tetrahedrons are triangular based pyramids that have 4 faces, 6 edges and 4 vertices which were built by the ancient Egyptians.

Where did the word negro come from?

If you're talking about the old word for black skinned people then 'negro' derived from Spanish meaning black. And if you just want the word.

English - Spanish

Black - Negro So it's Spanish Hope I helped :)

What is the meaning of acute angled triangle?

An acute angled triangle means all the angles are less than 90 degrees because an acute angle is an angle less than 90 degrees.

What are the angles of a triangle that has sides of 123 cm 97 cm and 79 cm?

Let the angles be A B C and their opposite sides be a b c and use the cosine rule to find the first two angles and then deduct them from 180 degrees to find the third angle and so therefore it follows that the angles are: 88.05 degrees, 52.01 degrees and 39.94 degrees.

Who are the fathers of trigonometry and their contributions?

based on my stock knowledge, i think hipparchus is the father of trigonometry.....

What is the contribution of hipparchuss in trigonometry?

Hipparchus was recognized as the first mathematician known to have possessed a trigonometric table, which he needed when computing the eccentricity of the orbits of the Moon and Sun. He tabulated values for the chord function, which gives the length of the chord for each angle. He did this for a circle with a circumference of 21600 and a radius (rounded) of 3438 units: this circle has a unit length of 1 arc minute along its perimeter. He tabulated the chords for angles with increments of 7.5°.

Application of trigonometry in your daily life?

Trigonometry can be used to find the heights of buildings when paired with a sextant (a device for measuring angles from the buliding)

What was trigonometry originally used for?

The same as it is now : measurement of angles and the lengths of the sides of triangular shapes. More complex shapes ha to be broken down into triangles.

What did Menelaus contributed to trigonometry?

An important contribution by Menelaus of Alexandria was his works on geodesics.

What is a BSW and CAS degree mean?

BSW is a Bachelor's in Social Work.

A CAS is a Certificate of Advanced Study. It usually refers to a graduate school degree above the Masters level. It is not to be confused with a CERT degree.

What does S50W mean in a trig 3D problem?

S50W is a direction - approximately SouthWest) in two dimensional space. In a 3D problem, by itelf, S50W has no meaning at all.

What are the differences between four conic sections?

A conic section is the intersection of a plane and a cone.

The circle is a conic section where the plane is perpendicular to the axis of the cone. The special case of a point is where the vertex of the cone lies on the plane.

The ellipse is a conic section where the plane is not perpendicular to the axis, but its angle is less than one of the nappes. The special case of a point is where the vertex of the cone lies on the plane.

The parabola is a conic section where the plane is parallel to one of the nappes. The special case of two intersecting lines is where the vertex of the cone lies on the plane.

The hyperbole is a conic section where the angle of the plane is greater than on of the nappes. There are two sides to the hyperbole. The special case of two lines intersecting is where the vertex of the cone lies on the plane.

For more information, please see the Related Link below.