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    If two sides of a triangle are 8 and 15, and the included angle is 30 degree, what...

    A = 1/2ab sin(C) = 1/2(8)(15)sin(30) = 30
  2. P

    Solving system of linear equations by Gaussian elimination?

    (1....1....1....0) (1....1....0....3) (0....1....1....1) Row 2 – Row 1 (1....1....1....0) (0....0..–1....3) (0....1....1....1) Interchange rows 2 and 3 (1....1....1....0) (0....1....1....1) (0....0..–1....3) z = –3 y – 3 = 1, y = 4 x + 4 – 3 = 0, x = –1 (–1, 4, –3)
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