Question

if sin^2 theta=1/5 then 1-cos^2 theta​

Answer 1

Answer:

1/5

Step-by-step explanation:

1-cos^2theta = sin^2theta

sin^2theta = 1/5

1-cos^2theta =1/5

Answer 2

sin^theta =1/5

1-cos^2theta =sin^theta

(from equation : sin^2theta +cos^2theta =1 ==> 1-cos^2theta =sin^2theta)

therefore, 1-cos^2theta = 1/5