Question 568470
<pre>
     cos[tan(t)] = 0.6

Be sure calculator is in radian mode.
Take the inverse cosine of both sides:

cos<sup>-1</sup>[cos(tan(t)] = cos<sup>-1</sup>(0.6)

          tan(t) = .927295218

Take the inverse tangent of both sides:

    tan<sup>-1</sup>[tan(t)] = tan<sup>-1</sup>(.927295218)

               t = .7476923037

Edwin</pre>