1.

Sin4theta-cos4theta/sin2theta-cos2theta

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ANSWER:

1

Step-by-step explanation:

USING identity a^2 - b^2 = (a+b)(a-b)

SIN4THETA - cos4theta/sin2theta - cos2 theta

(sin2 theta+ cos2 theta) ( sin2 theta - cos2 theta)/sin2 theta - cos2 theta

sin2 theta + cos2 theta

== 1

Mark this answer as BRAINLIEST.



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