Sign in
Please select an account to continue using cracku.in
↓ →
If $$cos^4\theta-sin^4\theta=\frac{2}{3}$$, then the value of $$1-2sin^2\theta$$ is,
$$cos^4\theta-sin^4\theta=(cos^2\theta-sin^2\theta)(cos^2\theta+sin^2\theta)=cos^2\theta-sin^2\theta=\frac{2}{3}$$
$$cos^2\theta-sin^2\theta =1-2sin^2\theta=\frac{2}{3}$$
Was this solution helpful?
Create a FREE account and get:
Start your IIM journey with the right preparation and crack CAT 2026.
Educational materials for CAT preparation
Ask our AI anything
AI can make mistakes. Please verify important information.
AI can make mistakes. Please verify important information.
91- 6303239042
