Sec^2 x = 1 + tan^2 x
tan^2 x = sec^2 x - 1
tan x = sqrt ( sec^2 x - 1) answer
The second choice is correct. Given that angle 2 and angle 6 are congruent, the largest in each of the corresponding triangles are vertical angles meaning that two known angles are known in each triangle (and they are equal) which means that the last "unknown" (angles 3 and 7) are congruent. The lines DC and AB correspond with these defined, congruent triangles meaning they are parallel.
Solve<span> A = bh for b. Since h is multiplied times b, you must divide both sides by h in order to isolate b. Since (c+d) is divided by 2, you must first multiply both sides of the </span>equation<span> by 2.</span>
$23.63. Because 6.95x3.4 is 23.63
Hope it helps
$23.63