Question

Trignomentry look at6 pic

Answer 1

Step-by-step explanation:

(2cos theta -1)(cos theta-3) = 0

either (2cos theta - 1) = 0 or (cos theta- 3)= 0

cos theta = 1/2 or cos theta= 3

As we know that, values of cos theta lies from -1 to 1

therefore, permissible value of cos theta is 1/2.