Which of the six t-ratios are positive for the angle :
`210^@` ?

Which of the six t-ratios are positive for the angle : -405^@ ?

Name the constant ratio of the sine of angle of incidence to the sine of angle of refraction.

A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip ia 45^(@) . Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30^(@) with the magnetic meridian. In this position the needle will dip by an angle

Find the position vector of a point, which divides the join of the points with position vectors veca-2vecb and 2 veca + vecb externally in the ratio 2 : 1 .

If the angle opf a triangle are in the ratio 1:2:3, then show that the sides opposite to the respective angle are in the ratio 1: sqrt3:2.

Write the six elements (i.e., the 3 sides and the 3 angles ) of triangle ABC

In a DeltaABC, a =1 and the perrimeter is six times the AM of the sine of the angles.The measure of angle A is

The position vector of the point which divides the join of points with position vectors vec a+vec b and 2vec a-vec b inthe ratio 1: 2 is

The angles of a traingle are in the ratio 2:3:4. find the angles of the triangle.