Math, asked by realmenarzo20a, 1 month ago

prove sin⁴-cos⁴/sin²-cos² = 1

Answers

Answered by topic1315

2

Step-by-step explanation:

sin⁴-cos⁴/sin²-cos²=1

on solving lhs

=(sin²+cos²)(sin²-cos²)/sin²-cos²

=sin²+cos²

=1

lhs=rhs

hence proved

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