What is the length of the chord in the figure below

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

The lengths of two sides of a triangle are 6 cm and 4 cm and the angle between them is 130^o. What is its area?.

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? 

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

How many rhombuses can we draw with one diagonal 5cm long and one angle 50^o

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

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? 

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?