Given: sine (a) = four-fifths, startfraction pi over 2 endfraction < a < pi and sine (b) = startfraction negative 2 startroot 5 endroot over 5 endfraction, pi, pi < b < startfraction 3 pi over 2 endfraction what is the value of cos(a – b)?.

It takes longer to fly an airplane against a with it

When looking at research about instructional strategies, make sure the research is a. from peer-reviewed studies. b. approved by state and federal government organizations. c. online and easily accessible. d. about the same topic you're interested in.

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.