cosine law OF triangle

Basic Notation and Sine Law OF Triangle

Vector Addition||Law OF Triangle /Parallelogram

Sine And Cosine Rule For Triangels

Types OF vectors || Triangle law OF addition || Parallelogram law OF addition || Section formula || Direction Ratio and Direction Cosine

Prove that the cosine formula for triangles is equivalent to the definition of the scalar product.

Let p be the product of the sines of the angles of a triangle ABC and q is the product of the cosines of the angles In this triangle tan A+tan B+tan C is equal to

The cosine of the angle of the triangle with vertices A(1,-1,2),B(6,11,2) and C(1,2,6) is

the sines of two angles of a triangle are equal to 5/13 & 99/101 the cosine of the third angle is

Find the direction cosines of the sides of the triangle whose vertices are (3,5,-4) (-1,1,2) and (-5,-5,-2)

Find the direction cosines of the sides of the triangle whose vertices are (3, 5, -4), (-1, 1, 1) and (-5, -5, -2).