Question

If sin^4 theta – cos^4 theta = k^4, then the value of sin^2 theta – cos^2 theta in terms of k:

(a) k^4
(b) k^3
(c) 2k^4
(d) k^2

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Answer 1

Answer:

2 πr 25&_₹-&:"₹---776544677+-gfddsyfs

Answer 2

square rooting both sides we get

sin2theta -cos2theta=k2