self Maths Puzzle

the least value of 4cosec^2+9sin^2 is??

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self Other Question

by decreasing 15 degree of each angle of a triangle the ratios of their anges are 2:3:5. the radian measure fo greatest angle is the average temperature of monday, tuesday and wednesday was 30degree celcius and that of tuesday, wenesday and thursday was 33 degree celcius. If the temperature on monday was 32 degree celcius. then the temperature on thursday was