trigonometry

If ABC is a triangle with sides a = BC, b = CA, c = AB, then prove that where 2s = a + b + ..

In any triangle ABC, prove that the area of a triangle ABC is given by ..

In any triangle ABC, with sides a = BC, b = CA and c = BA, then prove that a = b cos C + c cos B, b = c cos A + a cos C, c = a cos B + b cos..

Prove that in any triangle, the sides of a triangle are proportional to the sines of the opposite angle..

General solution of tan q = ..

General solution of sin q = ..

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 involve..

Question: The wheel of railway carriage is 90 cm in diameter and makes 3 revolutions in a second. How fast is the train moving? Answer: = 30.55 km/hr Note: 1m = 100cm 1km = 1000m = (1000)(100) = 100000 cm..

Question: Prove the following identity: Answer: ..

Question: Prove the following identity: Answer: ..