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Posted by on Monday, April 12, 2010 at 12:18am.

Find all solutions w between 0 and 360, inclusive:
(a) cosw = cos(−340)
(b) cosw = sin 20
(c) sinw = cos(−10)
(d) sin w < − 1/2
(e) 1 < tanw

  • Trig - , Monday, April 12, 2010 at 6:07am

    a cos 20
    b cos (90-20) = cos 70
    c sin (90 - -10) = cos -10 = sin 100
    d 30 deg from x axis in quadrants 3 and 4 for -sin so below 210 and 330
    e above 45 degrees in quadrant 1 and below 225 in quadrant 3

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