basic trigonometry problems help

An equation containing the trigonometrical functions of an unknown quantity is termed as a trigonometrical equation , which holds for some values (and not for all values) of the quantities involved. The value, that satisfies the equation are called the roots . The main problem of interest..

Trigonometry is that branch of mathematics which deals with the measurements of sides and angles of triangles. The figure obtained by rotating a given ray about its end point is called an angle. An angle is called positive if the direction of rotation of ray from initial side to ..

To solve a right angled triangle, we need to find out the unknown sides and the angles with the help of t-ratios. To find a side, usually we take such t-ratios that involve the unknown sides. We have taken A because, the side opposite to A is the unknown side. By this ..

In the previous sections many identities have been discussed. They are true for all values of the angles for which trigonometric functions are defined. In this section we prove identities, where a certain relationship exists among the angles considered. Many interesting and important identities are..

To solve a right angled triangle, we need to find out the unknown sides and the angles with the help of t-ratios. To find a side, usually we take such t-ratios that involve the unknown sides. In the figure, AB = 100 cm, find (i) x and (ii) ..

Question: How many radian are there in 120 o 30'? Keep the answer correct to three decimal places ( p = 3.1416). Answer: 180 o = p c ..

Question: Assuming the mean distance of the earth from the sun to be 149700000 km and the angle subtended by the sun at the eye of a person on the earth is 32'. Find the suns diameter. Answer: Let D be the diameter of the sun in km. The angle subtended by the sun being very small, its d..

Question: Prove the following identity: Answer: ..

Question: Prove the following identity: Answer: ..

Question: Prove the following identity: Answer: ..