Evaluate √√x² + y² dA, where D is the domain in the figure and a = 26. 26 2/16/₁₂ √²² + y² α ^ = A Incorrect 을 17260 (Give your answer in exact form. Use symbolic notation and fractions where needed.) Hint: Find the equation of the inner circle in polar coordinates and treat the right and left parts of the region separately. a (26)3 3 2π

using the 2 equation find the L and ø.

The relationship between the cone's vertex angle, 0, and the Mach number, M, of an aircraft that is flying faster than the speed of sound is given by 0 1 sin 2 M If 0= determine the Mach speed, M, of the aircraft. π 6' Express the speed as an exact value. M = (Simplify your answer. Type an exact answer, using radicals as needed. Rationalize the denominator.) Express the speed as a decimal to the nearest tenth. Ma Q Search (DELL IJ b

17) Find the sin(15°), cos(15º) and tan(15°). Use these formulas. Leave answers in radical format. sin(u v) = sin(u)cos(v) ± cos(u)sin(v) cos(u + v) = cos(u)cos(v) -/+ sin(u)sin(v) tan(u) + tan (v) sin (6) tan(u + v) =- or tan(0) = 1-/+ tan(u)tan (v) cos (e