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? 

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

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. 

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

Ratio of sides of right triangle with angle measures 30^o, 60^o, and 90^o is 

The area of a parallelogram is 30 square cm. One of its sides is 6 cm and on of its angles is 60^o. What is the length of its other side? 

ΔABC is right angled at B. Given that BC = √3 units, AC = 2 units and ∠A = x⁰. find sinx^o

In the figure below, O is the center of the circle. What if the diameter of the circle? 

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