TS EAMCET · Maths · Trigonometric Ratios & Identities
When is defined, then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
sin9θcos27θ+sin3θcos9θ+sinθcos3θ=ktan27θ-tanθ Substitute θ=π3 in the above expression, ⇒sin9π3cos27π3+sin3π3cos9π3+sinπ3cos3π3=ktan27π3-tanπ3 ⇒0+0+32-1=ktan9π-tan60°…
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