AP EAMCET · Maths · Trigonometric Ratios & Identities
If then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
cosπ4cosπ8cosπ16cosπ32=2mcosecπn LHS=12sinπ2n2cosπ2nsinπ2ncosπ2n-1..........cosπ4 12cosπ2n2sinπ2n-1cosπ2n-1cosπ2n-2..........cosπ4…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Maths
- If \(X \sim B(5, p)\) is a binomial variate such that \(p(X=3)=\) \(p(X=4)\), then \(p(|X-3| \lt 2)=\)AP EAMCET 2024 Easy
- If the roots of the equation \(6 x^3-11 x^2+6 x-1=0\) are in harmonic progression, then the roots of \(x^3-6 x^2+11 x-\) \(6=0\) will be inAP EAMCET 2023 Easy
- If \(f(x)=\cot ^{-1}\left(\frac{x^x-x^{-x}}{2}\right)\), then \(f^{\prime}(1)=\)AP EAMCET 2019 Medium
- If \(\int_{-1}^4 f(x) d x=4\) and \(\int_2^4(3-f(x)) d x=7\) then \(\int_{-1}^2 f(x) d x=\)AP EAMCET 2017 Medium
- An item is tested on a device for its defectiveness. The probability that such an item is defective is 0.3. The device gives accurate result in 8 out of 10 such tests. If the device reports that an item tested is not defective, then the probability that it is actually defective isAP EAMCET 2025 Medium
- Find the value of \(k\), if the angle between the straight lines represented by \(2 x^2+5 x y+3 y^2+6 x+7 y+4=0\) is \(\tan ^{-1}(k)\).AP EAMCET 2020 Easy
More PYQs from AP EAMCET
- An aeroplane of mass \(4.5 \times 10^4 \mathrm{~kg}\) and total wing area of \(600 \mathrm{~m}^2\) is travelling at a constant height. The pressure difference between the upper and lower surfaces of its wings is
(Acceleration due to gravity \(=10 \mathrm{~m} \mathrm{~s}^{-2}\) )AP EAMCET 2025 Hard - \(\int_0^{\pi / 4} \frac{d x}{\cos ^3(x) \cdot \sqrt{2 \sin (2 x)}}=\)AP EAMCET 2020 Medium
- A given system undergoes a change in which the work done by the system equals the decrease in its internal energy. The system must have undergone anAP EAMCET 2021 Easy
- The conductivity of \(0.001 \mathrm{M}\) acetic acid at a certain temperature is \(5.07 \times 10^{-5} \mathrm{~S} \mathrm{~cm}^{-1}\). If \(\wedge_m^0\) of acetic acid at the same temperature is \(390 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\), the dissociation constant of acetic acid at that temperature is:AP EAMCET 2017 Medium
- A wire of length 2.5 m is fixed at one end and a box of mass 4 kg is tied at the other end. If the wire rotates in a horizontal circle about the fixed end with \(\frac{2}{\pi}\) rotations per second, then the tension in the wire isAP EAMCET 2025 Medium
- The derivative of \(\operatorname{Sec}^{-1}\left(\frac{1}{2 x^2-1}\right)\) with respect to \(\sqrt{1-x^2}\) at \(x=\frac{1}{2}\) isAP EAMCET 2025 Medium