Category: Mathematics

Solution: What is (cos A)^4 – (sin A)^4 equal to?

Solution: If sec^2A is 5/2, the quantity 1 – sin^2A is equivalent to

Solution: What is Sin(B–A) equal to, when B=270 degrees and A is an acute angle

Solution: Find the 1987th in the decimal equivalent to 1785/9999

Solution: In the series 1, 1, ½, 1/6, 1/24, . . .determine the 6th term

Solution: Find the 6th term of the sequence 55, 40, 28, 19, 13, . . .

Solution: Find the total number of spheres in the pile if each side of the base contains 4 spheres

Solution: Find the ratio of an infinite geometric progression if the sum is 2 and the first term is ½

Solution: Find the sum of 1, – 1/5, 1/25, . . .

Solution: Find the sum of the infinite geometric progression 6, -2, 2/3, . . .