exam Maths Puzzle Numerical Ability

Solve the given triginometric equations analytically and by use of a graphing calulator. Compare results. Use values of x for 0 less then or equal to x less then 2pi

sin 4x - co

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exam Other Question

if m<6 =72, then m<7 = Sum this series of numbers: 1+4+7+10+13+16+....+8938+8941+8944. How do you find the number of integers and how do you solve? I got 1491 integers [1+(n-1)*3 = 8944 and Sum [n/2*(1+8944)]= 13,336,995.