Evaluate the integral. Integral from pi divided by 2 to 5 pi divided by 2 StartRoot 1 minus sine squared t EndRoot font size decreased by 3 dt Question content area bottom Part 1 Integral from pi divided by 2 to 5 pi divided by 2 StartRoot 1 minus sine squared t EndRoot font size decreased by 3 dtequals enter your response here (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)