Question

Prove: 2(sin^6theta+ cos^6theta)- 3(sin^4theta+ cos^4theta)+1 = 0​

Answer 1

Answer:

2(sin^2theta+cos^2theta)^3-3(sin^2theta+cos^2theta)2+1

2(1)^3-3(1)^2+1

2(1)-3(1)+1

2-3+1

3-3

0