If arcsin (3x - 4y) = 1.571 and arccos (x - y) = 1.047, what is the value of x? Date of Exam May 2010 Subject Mathematics, Surveying and Transportation Engineering Problem If $\arcsin (3x - 4y) = 1.571$ and $\arccos (x - y) = 1.047$, what is the value of $x$? A. 0.5 C. 1.5 B. 1.0 D. 2.0 Answer Key Click here to show or hide the answer key [ B ] Solution Click here to expand or collapse this section $\arcsin (3x - 4y) = 1.571$ $3x - 4y = \sin 1.571$ ← Equation (1) $\arccos (x - y) = 1.047$ $x - y = \cos 1.047$ ← Equation (2) From Equations (1) and (2), calculator in RAD mode $x = 1.0$ ← answer $y = 0.5$ Category Algebra Trigonometry Two Equations, Two Unknowns Inverse Trigonometric Functions Arcsine Function Arccosine Function Log in or register to post comments
