1. Convert the angle given in degrees to radian measure in terms of pie.
Round the coefficient to two decimal places
2. Evaluate to four significant digits.
sin^2 pie/3 + cos pie/3
3. A satellite is in a circular orbit 225 km above the equator of the earth. How many kilometres must it travel for its longitude to change by 86.3°? Assume the radius of the earth equals 6400 kilometres.
Round the answer to the whole.
i put 9640km its wrong
4. Solve the equation 8- tan theta = 0 for all nonnegative values of theta less than 360* . Do by calculator, if needed, and give the answers to three significant digits in the order of increasing.
i dont understand this question