SOLUTION: sin^2theta-cos^2theta=1/4 then find the value of sin^4 theta-cos^4 theta

Question 938113: sin^2theta-cos^2theta=1/4 then find the value of sin^4 theta-cos^4 theta
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

same, is equal to too
proof:

since

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