It is difficult to calculate the approximation of this problem.

This problem is very difficult.

We decided to lower the price of this product.

His painting closely resembles Picasso's work.

This math problem can be solved using an approximation.

Can you answer this question?

Please calculate the value of the cotangent, which is one of the trigonometric functions.

He was able to solve the complex calculation quickly.

He was calculating in his head.

How much is the price of this product?