関連ワード:  what does tan^2 theta equal    what does tan 2 theta equal    what does tan 2 x equal    what does tan squared x equal    what does 1 tan 2 theta equal    what does 1 tan 2 x equal    what does tan(pi/2 - x) equal    what does 1 tan squared x equal    what does 1 plus tan squared x equal    what is tan^2 theta equal to