TS EAMCET · Maths · Trigonometric Ratios & Identities
The number of values of satisfying and is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given cos3x=sin4x ⇒cos3x=cosπ2-4x If cosθ=cosα, then θ=2nπ±α, n∈Z, ⇒3x=2nπ±π2-4x ⇒3x=2nπ+π2-4x or 3x=2nπ-π2-4x ⇒7x=2nπ+π2 or -x=2nπ-π2…
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