A ladder of 6m length is kept in slanting position on a straight tree in a plane ground. The ladder makes on angle of 50^o with the plane ground. Calculate the height from the plane ground to the top of the ladder. 

The side of a right angled triangle opposite the right angle is 

Evaluate cos 30 + sin30

Find the area of a triangle with two of its sides 10cm and 6cm and the angle between these sides 80^o 

The length of the shadow of a tree is 18m, when the sun is at an elevation of 40^o. What is the height of the tree? 

Ratio of the sides of a right angled triangle having angle measures 45^o, 45^o, 90^o is 

Given that cos30^o = √3/2, then value of cos60^o is

For an acute angle A, sin (90^o - A) = 

A ladder leans against a wall with its foot 2m away from the wall and it makes a 40^o angle with the ground. How high is the top of the ladder from the ground? 

In the right angled triangle ABC, ∠B = 90° and ∠C = 30°. if AC = 10cm, find the lengths of the side AB.