Math, asked by soundaryaa73, 9 months ago

prove that sin power 4 theta minus vis power 4 theta us equal to 2sin square theta minus 1

Answers

Answered by Anonymous

2

Answer:

=(sin² theta)² - (cos² theta)²

=(sin² theta + cos² theta) (sin² theta - cos² theta)

= 1(sin² theta - cos² theta)

= 1(sin² theta - 1 + sin² theta)

= 1(2sin² theta - 1)

= 2sin² theta - 1

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