Tag: math & puzzles

sin 30 + cos 60

tan 45 + sin 90 + cos 0

sin 45 > tan 45

tan 30 * tan 60

tan 60+cos 45+sin 45+tan 30 is greater than(more than one answer)

cosine is positive in which quadrant

(sin 60*cosec 60*cos 45*sec 45)* (cot 45*tan 45*tan 30*tan 60)

A school bus travels from Veldhoven to Roosendaal. There are 4 children in the bus. And each child has 4 backpacks with him. There are 4 dogs sitting in each backpack. And every dog has 4 puppies with her. All these dogs have 4 legs, with 4 toes at each leg. What is the total number of toes in the bus?

Using the digits 1 up to 9, two numbers must be made. The product of these two numbers should be as large as possible. All digits must be used exactly once. Which are the requested two numbers?