Math, asked by mohdaaish3459, 9 months ago

If sinA-cosA=0 then the value of sin^4A-cos^4A

Answers

Answered by rajeevr06
1

Answer:

 \sin {}^{4} ( \alpha )  -  \cos {}^{4} ( \alpha )  =(  \sin {}^{2}  \alpha  +  \cos {}^{2}  \alpha )(\sin {}^{2}  \alpha   -   \cos {}^{2}  \alpha ) = 1 \times (\sin  \alpha  +  \cos   \alpha )(\sin  \alpha   -  \cos   \alpha ) = 1 \times (\sin \alpha  +  \cos  \alpha ) \times 0 = 0

Similar questions