TS EAMCET · Maths · Trigonometric Ratios & Identities
If \(\frac{1}{\sin 45^{\circ} \sin 46^{\circ}}+\frac{1}{\sin 46^{\circ} \sin 47^{\circ}}+\ldots\) upto 45 terms \(=\frac{1}{\sin x^{\circ}}\), then \(\sin \left(\frac{\pi}{2} x\right)=\)
- A 0
- B \(\sin 1\)
- C 1
- D \(\cos 1\)
Answer & Solution
Correct Answer
(C) 1
Step-by-step Solution
Detailed explanation
Given,…
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 \(2 x+3 y=5\) is the perpendicular bisector of the line segment joining the points \(A\left(1, \frac{1}{3}\right)\) and \(B\), then \(B\) is equal toTS EAMCET 2013 Medium
- If the plane passing through the points \(\hat{\mathbf{i}}+\hat{\mathbf{j}}+\hat{\mathbf{k}}, 2 \hat{\mathbf{i}}-\hat{\mathbf{k}}\) and the origin meets the line passing through the points \(\hat{\mathbf{i}}+3 \hat{\mathbf{j}}-2 \hat{\mathbf{k}}\) and \(\hat{\mathbf{i}}-\hat{\mathbf{j}}+3 \hat{\mathbf{k}}\) at the points \(A\), then \(A=\)TS EAMCET 2019 Medium
- For if term is the first negative term in the expansion of and in the expansion of from term onwards all the terms are positive, then the number of terms in the expansion of isTS EAMCET 2021 Easy
- \(\int\left(\frac{1}{x^2}+\frac{\sin ^3 x+\cos ^3 x}{\sin ^2 x \cos ^2 x}\right) d x=\)TS EAMCET 2025 Medium
- The period of \(\frac{\sin x}{\cos 3 x}+\frac{\sin 3 x}{\cos 9 x}+\frac{\sin 9 x}{\cos 27 x}+\frac{\sin 27 x}{\cos 81 x}\) isTS EAMCET 2020 Medium
- Three vectors and satisfy If thenTS EAMCET 2021 Easy
More PYQs from TS EAMCET
- To increase the length of a metal rod by \(0.4 \%\), the temperature of the rod is to be increased by
(Coefficient of linear expansion of the metal \(=20 \times 10^{-6}{ }^{\circ} \mathrm{C}^{-1}\) )TS EAMCET 2025 Easy - The position vector of a particle moving in a plane is given by \(\mathbf{r}=a \cos \omega t \hat{\mathbf{i}}+b \sin \omega t \hat{\mathbf{j}}\), where \(\hat{\mathbf{i}}\) and \(\hat{\mathbf{j}}\) are the unit vectors along the rectangular axes \(X\) and \(Y ; a, b\) and \(\omega\) are constants and \(t\) is time. The acceleration of the particle is directed along the vectorTS EAMCET 2018 Easy
- The roots of the equation \(x^4+x^3-4 x^2+x+1=0\) are diminished by \(h\) so that the transformed equation does not contain \(\mathrm{x}^2\) term. If the values of such \(\mathrm{h}\) are \(\alpha\) and \(\beta\), then \(12(\alpha-\beta)^2=\)TS EAMCET 2023 Medium
- Two slits are made one millimetre apart and the screen is placed one metre away from the slits. The fringe width when light of wavelength \(500 \mathrm{~nm}\) is used isTS EAMCET 2023 Easy
- A soap bubble of initial radius \(R\) is to be blown up. The surface tension of the soap film is \(\mathrm{T}\). The surface energy needed to double the diameter of the bubble isTS EAMCET 2022 Easy
- The graph given in the figure shows the variation of photo current (I) and the applied voltage (V) for two different materials and for two different intensities of the incident radiations. Then the curves which represent the same material are
TS EAMCET 2023 Medium