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

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

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

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

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.

Find the equation of a line through the origin, which makes an angle of 45^@ with the positive direction of x-axis.

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

Given tan A = 4/3 , find the other trigonometric ratios of the angle A.

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