The value of (1 - 2Sin2θ Cos2θ)/(Sin4θ + Cos4θ) - 1 is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 0.
| Understanding/Application |
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(1 - 2Sin2θ Cos2θ)/(Sin4θ + Cos4θ) - 1 = (1 - 2Sin2θ Cos2θ -Sin4θ - Cos4θ)/(Sin4θ + Cos4θ) |
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= 1 - (Sin2θ + Cos2θ)2/(Sin4θ + Cos4θ) = (1 - 1)/(Sin4θ + Cos4θ) = 0 |