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The tangent of an acute angle equals 1/2. What is the sine of the angle?(A) 1/p3 (B)p5/2 (C) 2/p5 (D) 1/p5 ( E) None of the
1. 1 answer
2. 378 views
In a right triangle the hypotenuse has length 10 and the the sum of the cotangents ofall three angles of the triangle equals 2.
1. 1 answer
2. 493 views
How many solutions does the equation cos(x) + cos(−x) = 0 have if 0 < x < 2pi?(Radian measure is assumed for x.) (A)
1. 1 answer
2. 437 views
A sine wave function f(x) = a sin(bx) has amplitude 10 and period 40. What are thevalues of a and b? (A) a = 10 and b = 20/pi (
1. 3 answers
2. 811 views