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Suppose sin(A) = 2/5. Use the trig identity sin^2(A) + cos^2(A) = 1 to find cos(A) in quadrant I. Round to ten-thousandth.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no