Question

find the value of sin^4 theta-cos^4 theta=?​

Answer 1

Answer:

1-2sin²∅cos²∅

Step-by-step explanation:

=(sin²∅)²+(cos²∅)²

=a²-b²=(a+b)²-2ab

=(sin²∅+cos²∅)²-2sin²∅cos²∅

=(1)²-2sin²∅cos²∅

=1--2sin²∅cos²∅

Answer 2

Answer:

value of sin^4 theta-cos^4 theta =1-2cos^theta