Make a pair of parallel lines what is the angle formed between them? Think, discuss with your friends and teacher.

The equation x^2-5xy+py^2+3x-8y+2=0 represents a pair of straight lines. If theta is the angle between them, them , then sin theta =

Phosphorus and sulphur show multiple valency. Why do some elements show multiple valency? Discuss with your friends and teachers.

Preethi went to a shop to buy a dress. Its marked price is ₹ 2500. Shop owner gave 5% discount on it. On further insistence, he gave 3% more discount. What will be the final discount she obtained? Will it be equal to a single discount of 8% Think, discuss with your friends and write it in your notebook.

Let the equation ax^(2)+2hxy+2gx+2fy+c=0 represent a pair of parallel lines. Prove that the equation of the line midway between the two parallel lines is hx+by+f=0

Try to think and prepare your own solar appliance. Discuss with your teacher.

How could we use the principle of electromagnetic induction in the case of using ATM card when its magnetic strip is swiped through a scanner? Discuss with your friends or teachers.

Make 5 more problems of this using dice, cards or birthdays and discuss with friends and teacher about their solutions.