WBJEE · Maths · Properties of Triangles
In triangle \(\mathrm{ABC}, \mathrm{a}=2, \mathrm{~b}=3\) and \(\sin \mathrm{A}=\frac{2}{3}\), then \(\mathrm{B}\) is equal to
- A \(30^{\circ}\)
- B \(60^{\circ}\)
- C \(90^{\circ}\)
- D \(120^{\circ}\)
Answer & Solution
Correct Answer
(C) \(90^{\circ}\)
Step-by-step Solution
Detailed explanation
Hints: \(\frac{a}{\sin A}=\frac{b}{\sin B}\) \(\sin B=\frac{b}{a} \cdot \sin A=\frac{3}{2} \cdot \frac{2}{3}=1\) \[ \mathrm{B}=\frac{\pi}{2} \]
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 \(p, q\) are odd integers, then the roots of the equation \(2 p x^{2}+(2 p+q) x+q=0\) areWBJEE 2017 Easy
- A survey of people in a given region showed that \(20 \%\) were smokers. The probability of death due to lung cancer given that a person smoked was 10 times the probability of death due to lung cancer, given that a person did not smoke. If the probability of death due to lung cancer in the region is 0.006 . What is the probability of death due to lung cancer given that a person is a smoker?WBJEE 2015 Medium
- For any non-zero complex number \(z\), the minimum value of \(|z|+|z-1|\) isWBJEE 2019 Medium
- The circles \(\mathrm{x}^2+\mathrm{y}^2-10 \mathrm{x}+16=0\) and \(\mathrm{x}^2+\mathrm{y}^2=\mathrm{a}^2\) intersect at two distinct points ifWBJEE 2009 Medium
- If \(\left(x^2 \log _x 27\right) \cdot \log _9 x=x+4\) then the value of \(x\) isWBJEE 2024 Easy
- The locus of the mid-points of the chords of an ellipse \(x^{2}+4 y^{2}=4\) that are drawn from the positive end of the minor axis, isWBJEE 2013 Hard
More PYQs from WBJEE
- The intensity of light emerging from one of the slits in a Young's double slit experiment is found to be \(1.5\) limes the intensity of light emerging from the other slit. What will be the approximate ratio of intensity of an interference maximum to that of an interference minimumWBJEE 2020 Easy
- Consider the equation \(y-y_1=m\left(x-x_1\right)\). If \(m\) and \(x_1\) are fixed and different lines are drawn for different values of \(y_1\), thenWBJEE 2022 Easy
- The best method for the preparation of 2, 2-dimethylbutane is via the reaction ofWBJEE 2013 Easy
-

Consider a pure inductive A.C. circuit as shown in the figure. If the average powr consumed is \(P\), thenWBJEE 2021 Easy - The solution set of the equation \(\left(x \in\left(0, \frac{\pi}{2}\right)\right) \tan (\pi \tan x)=\cot (\pi \cot x)\) isWBJEE 2025 Medium
- \(\beta-emission\) is always accompanied byWBJEE 2014 Easy