If tan(theta)= -10, sin(theta)<0, find the exact value of each of the following for 0≤theta<2π. A. sin(2theta) B. cos(2theta) C. sin theta/2 D. cos theta/2

Sorry, I couldn't find the symbol for theta!!! :(

Identify the number as a rational or irrational. explain. 127

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?