Find the sum of the infinite series tan2 θ − tan4 θ + tan6 θ + . . + (−1)n−1 tan2n θ + . . whenever the series converges.

Parks is wearing several rubber bracelets one third of the bracelets are tie-dye 1/6 are blue and 1/3 of the remainder are camouflage if parks wears 2 camouflage bracelets how many bracelets does he have on

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.