AP EAMCET · Maths · Trigonometric Ratios & Identities
If \(\sec (\theta+\alpha), \sec \theta, \sec (\theta-\alpha)\) are in arithmetic progression, then \(\cos \theta \cdot \sec \frac{\alpha}{2}=\)
2.
3. \pm 2
www. android.universityupdates.in \(\mid\) www.universityupdates.in \(\mid\) www. ios.universityupdates.in
www.android.previousquestionpapers.com | www.previousquestionpapers.com | www.ios.previousquestio 4.
- A \(\frac{\sqrt{3}}{2}\)
- B \(\frac{1}{\sqrt{2}}\)
- C \(\pm {2}\)
- D \(\pm \sqrt{2}\)
Answer & Solution
Correct Answer
(D) \(\pm \sqrt{2}\)
Step-by-step Solution
Detailed explanation
\(2 \sec \theta = \sec (\theta+\alpha) + \sec (\theta-\alpha)\) \(\frac{2}{\cos \theta} = \frac{\cos (\theta-\alpha) + \cos (\theta+\alpha)}{\cos (\theta+\alpha) \cos (\theta-\alpha)}\)…
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 \(f(x)=\log _{x^2}(\log x)\), then \(f^{\prime}(x)\) at \(x=e\) isAP EAMCET 2021 Hard
- If \(\bar{p}, \bar{q}, \bar{r}\) are three mutually perpendicular vectors of equal magnitude and if a vector \(\bar{x}\) satisfies the equation \(\bar{p} \times((\bar{x}-\bar{q}) \times \bar{p})+\bar{q} \times((\bar{x}-\bar{r}) \times \bar{q})+\bar{r} \times((\bar{x}-\bar{p}) \times \bar{r})=\bar{o}\) then \(\bar{x}\) isAP EAMCET 2017 Medium
- If are two events with and , then the value of isAP EAMCET 2021 Easy
- The sum of the order and degree of the differential equation \(x\left(\frac{d^2 y}{d x^2}\right)^{\frac{1}{2}}=\left(1+\frac{d y}{d x}\right)^{\frac{4}{3}}\) isAP EAMCET 2024 Easy
- If the tangent at the point on the circle meets the straight line at a point on the -axis, then the length of isAP EAMCET 2022 Hard
- Given the circle \(C\) with the equation \(x^2+y^2-2 x+10 y-38=0\). Match the List I with the List II given below concerning \(C\)
The correct answer is
\(\begin{array}{llll}\text { A } & \text { B } & \text { C } & \text { D }\end{array}\)AP EAMCET 2012 Easy
More PYQs from AP EAMCET
- The minimum excitation energy of an electron revolving in the first orbit of hydrogen isAP EAMCET 2023 Easy
- For real number \(x\), if the minimum value of \(f(x)=x^2+2 b x+2 c^2\) is greater than the maximum value of \(g(x)=-x^2-2 c x+b^2\), thenAP EAMCET 2018 Easy
- The number of ways of distributing 3 dozen fruits (no two fruits are identical) to 9 persons such that each gets the same number of fruits isAP EAMCET 2025 Medium
- \(\int_0^3\left|x^2-3 x+2\right| d x=\)AP EAMCET 2018 Medium
- Four capacitors are connected as shown in the figure. If \(\mathrm{C}_1, \mathrm{C}_2, \mathrm{C}_3\) and \(\mathrm{C}_4\) are in the ratio of \(1: 2: 3: 4\), then the ratio of the charges on the capacitors \(C_2\) and \(C_4\) is
AP EAMCET 2025 Medium - The mechanical energy of a damped oscillator becomes half of its initial energy in 4 seconds. In another \(t\) seconds its mechanical energy becomes \(12.5 \%\) of its initial mechanical energy. Then \(t=\)AP EAMCET 2023 Hard