Find all solutions to the equation cosx cos(3x) + sinx sin(3x) = 0 on the interval [0,].

452,489 to the nearest thousand is 452,000

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

2 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2