The picture below shows a right-triangle-shaped charging stand for a gaming system: the side face of a charging stand is a right triangle labeled abc. The measure of angle acb is 90 degrees, and the measure of angle abc is 55 degrees. The height of the stand is 7 inches. Which expression shows the length, bc, of the base of the stand? 7 over tan 55 degrees 7(cos 55°) 7 over sin 55 degrees 7(tan 55°).

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.