write (tan25 + tan40)/(1+tan25tan40) as a single trig function

7!

write cos75cos24 + sin24sin75 as a single trig function

75^2

what is the Golden Ratio to 3 decimal places

Name for a quadrilateral inscribed in a circle

finds a vector perpendicular to two other vectors in 3-space

what is the sum of the coefficients of (x + y)^7

Problem

Answer

area of a parallelogram with sides of 6 and 9 and an included angle of 30 degrees

what is the modulus of z = -6 + 8i

how many faces does an icosahedron have?

what is the 5th row of Pascal's triangle

how many prime numbers are there less than 100

what shape is used for the faces of a regular hexahedron

how many petals does the rose curve y = 8sin5(theta) have?

Numbers in the series: 1, 1, 2, 5, 14, 42, 132, 429..../gives number of ways a polygon with (n+2) sides can be cut into triangles w/straight lines/number of Dyck words of lenght 2n

number of ways to pick 4 objects out of a group of 6

what is the sum of the coefficients of (x - y)^7

single interior angle of regular dodecagon

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