p. 1

vector calculator vector is vastly used concept in math as well as in science vector calculator is a very useful online tools for students put the values and get the answers not delay vector involves some operations like addition subtraction etc.in vector calculator page you will get all vector related calculator like cross product calculator vector addition calculator etc if one angle of a triangle is 90 degrees and one of the other angles is known the third is thereby fixed because the three angles of any triangle add up to 180 degrees the two acute angles therefore add up to 90 degrees they are complementary angles the shape of a triangle is completely determined except for similarity by the angles once the angles are known the ratios of the sides are determined regardless of the overall size of the triangle if the length of one of the sides is known the other two are determined these ratios are given by the following trigonometric functions of the known angle a where a b and c refer to the lengths of the sides in the accompanying figure learn more about math tutor

[close]

p. 2

the hypotenuse is the side opposite to the 90 degree angle in a right triangle it is the longest side of the triangle and one of the two sides adjacent to angle a the adjacent leg is the other side that is adjacent to angle a the opposite side is the side that is opposite to angle a the terms perpendicular and base are sometimes used for the opposite and adjacent sides respectively many english speakers find it easy to remember what sides of the right triangle are equal to sine cosine or tangent by memorizing the word soh-cah-toa see below under mnemonics the inverse functions are called the arcsine arccosine and arctangent respectively there are arithmetic relations between these functions which are known as trigonometric identities the cosine cotangent and cosecant are so named because they are respectively the sine tangent and secant of the complementary angle abbreviated to co with these functions one can answer virtually all questions about arbitrary triangles by using the law of sines and the law of cosines these laws can be used to compute the remaining angles and sides of any triangle as soon as two sides and their included angle or two angles and a side or three sides are known these laws are useful in all branches of geometry since every polygon may be described as a finite combination of triangles read more on live online tutoring

[close]

p. 3

thank you tutorvista.com

[close]