Q.1 If θ is the positive …
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Q.1 If θ is the positive acute angle , then solve the equation
4 cos2 θ - 4 sinθ = 1 .
Q.2 Find the value of sin 2θ , when tan θ = 247 and θ lies in 3rd quadrant.
Q.3 If sinθ = 1213 , then find the quadrants in which θ can lie. Also , find the values of the remaining trigonometric ratios of θ .
Q.4 A horse is tied to a post by a rope. If the horse moves along a circular path always keeping the rope tight and describes 88m, when it has traced out 720 at the centre. Then, find the length of rope.
Posted by Abhishek Kapoor 6 years, 10 months ago
- 1 answers
Related Questions
Posted by Shraddha Mathur 1 month ago
- 0 answers
Posted by Prince Kumar 1 month, 1 week ago
- 0 answers
Posted by Siddhi Jadhav 4 days, 1 hour ago
- 0 answers
Posted by Not Fine Bro 🎭 1 month, 1 week ago
- 0 answers
Posted by Anant Gautam 2 weeks, 4 days ago
- 0 answers
Posted by Adi Manav 1 month, 2 weeks ago
- 0 answers
Posted by Akshat Singla 4 hours ago
- 0 answers
Posted by Rishi Raj Singh 3 days, 2 hours ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Rashmi Bajpayee 6 years, 10 months ago
Q.2 {tex}\sin 2\theta = {{2\tan \theta } \over {1 + {{\tan }^2}\theta }}{/tex}
Since {tex}\theta {/tex} is in third quadrant, therefore value of tangent is positive.
{tex}\Rightarrow{/tex} {tex}\sin 2\theta = {{2 \times {{24} \over 7}} \over {1 + {{\left( {{{24} \over 7}} \right)}^2}}}{/tex}
{tex}\Rightarrow{/tex} {tex}\sin 2\theta = {{{{48} \over 7}} \over {1 + {{576} \over {49}}}}{/tex}
{tex}\Rightarrow{/tex} {tex}\sin 2\theta = {{48} \over 7} \times {{49} \over {625}} = {{336} \over {625}}{/tex}
0Thank You