Answer:
1/14
Step-by-step explanation:
Cross multiply the expression so that we can get
(1+sinx)(1-sinx) = cos^2 x
1 - sin^2 x = cos^2 x
cos^2 x + sin^2 x = 1
since
cos^2 x + sin^2 x = 1
therefore
1 = 1
the two expressions are identical in a trigonometric sense
You would subtract how many times Dion tagged bill with how many times bill tagged Dion, so 12 - 7 = 5
