AP EAMCET · Maths · Trigonometric Equations
The possible value of \(\sin ^6(\theta)+\cos ^6(\theta)-3 \cos ^4(\theta)\) is
- A 2
- B -2
- C -3
- D 3
Answer & Solution
Correct Answer
(B) -2
Step-by-step Solution
Detailed explanation
The \(\sin ^6 \theta+\cos ^6 \theta-3 \cos ^4 \theta\) \(=\left(\sin ^2 \theta+\cos ^2 \theta\right)\left(\sin ^4 \theta+\cos ^4 \theta-\sin ^2 \theta \cos ^2 \theta\right)-3 \cos ^4 \theta\)…
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