Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Ans is 1
-cos^2-sin^2    [sin^2+cos^2 = 1]=[-1=-sin^2-cos^2]
so sin^2+cos^2=1
 so ans is 1
1 5 1
The Brainliest Answer!
2[(cos²)³ +(sin²)³] -3[(cos²)² +(sin²)²]
on using formula a³+b³=(a+b)(a²+b²-ab)
2[(cos²+sin²)(cos^4+sin^4-cos²sin²)] -3[cos^4+sin^4]
using sin²x+cos²x=1
2[cos^4+sin^4-sin²cos²] -3cos^4-3sin^4
-[(cos²)² +(sin²)² +2sin²cos²]
-1 is answer
3 5 3
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts