Question

if cot beta =4/3, then cos²beta -sin² beta is equal to what?​

Answer 1

Answer:

7/25

Step-by-step explanation:

cot beta=4/3

so cos theta =4/5

and sin theta = 3/5

so cos^2beta= 16/25 and sin ^2beta=9/5

so cos^2beta-sin^2beta=16/25-9/25= 7/25