Its upside down but what are the answers to all of the equations?

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.