6-75 the slant height height of the cone). As part of a sculpture exhibit, an artist is constructing three such structures each with a radius of 2 m and a slant height of 3 m. (a) Find the volume of the sculptures if the angle of deflection is a = (b) What angle 0 was used if the volume of each sculpture is 12 m3? or lateral Section 6.7 General Trig Equations Exercise 44 monthly income in Octo the year is his average r 49. Seasonal ice thicknes the ice covering an ard the function T(x) = 9 15°. is the average thickne x(xx1January mid-March? (b) For ice at most 10.5 in. %3D 45. River discharge rate: For June through February, 50. Seasonal tempera the discharge rate of the La Corcovada River (Venezuela) can be modeled by the function 9. TT T(x) = 19 sin monthly temperat stream, where T( water in month x TT D(t) = 36 sin + 44, where t represents %3D 4. 4. the months of the year with t = 1 corresponding to June, and D(t) is the discharge rate in cubic meters per second. (a) What is the discharge rate in mid- September? (b) For what months of the year is the discharge rate over 50 m²/sec? Source: Global River Discharge Database Project3; %3D (x = 1→Januar (a) What is the temperature of water in Octobe %3D ngle (b) What two months are mo written as n, where www.rivdis.sr.unh.edu. likely to give 46. River dischar rate: For February through June, the average m hly discharge of the Point Wolfe River (Canadaj can be modeled by the function temperature reading of 62 (c) For what months of th is the tempe te the and or the TT D(t) = 4.6 sin –t + 3 ) + 7.4, where t represents below 50°F the months of the year with t = 1 corresponding to February, and D(t) is the discharge rate in cubic meters/second. (a) What is the discharge rate in mid-March (1 = 2.5)? (b) For what months of the year is the discharge rate less than 7.5 m Source: Global River Discharge Database Projec 51. Coffee sale weather, w winter that the functi n in models d www.rivdis.sr.unh.edu. Oil is a very 6-74