Question

if theta lies in third quadrant then cos(theta)/(2)+sin(theta)/(2) is positive isit false or true​

Answer 1

Answer:

True

Step-by-step explanation:

• Here the range of (theta)/2 lies in 2nd quadrant btwn pi/2 to 3pi/4.
• So, the value of sine (theta)/2 is positive and greater then cos (theta)/2 .
• Where values of cos (theta)/2 are negative and less then or equal to the modulous values of sine (theta)/2
• so the final result is a positively real number.
• so Ans is True