11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 27/08/2019
Trigonometry
Download Tamil Nadu 11th Standard Business Maths and Statistics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Business Maths and Statistics Test
1.
If sin A + cos A = 1, then sin 2A is equal to _______.
1
2
0
\(\frac{1}{2}\)
2.
The value of sec A sin(270o + A) is ______.
-1
cos2 A
sec2 A
1
3.
The value of sin 15o cos 15o is ______.
1
\(\frac{1}{2}\)
\(\frac{\sqrt3}{2}\)
\(\frac{1}{4}\)
4.
The value of \(\sin 28^o\cos 17^o+\cos 28^o\sin 17^o\) is _______.
\(\frac{1}{\sqrt2}\)
1
\(\frac{-1}{\sqrt2}\)
0
5.
The value of \(\cos(-480^o)\) is ________.
\(\sqrt3\)
\(-\frac{\sqrt3}{2}\)
\(\frac{1}{2}\)
\(\frac{-1}{2}\)
6.
The value of \(\sin(-420^o)\) is _______.
\(\frac{\sqrt3}{2}\)
\(-\frac{\sqrt3}{2}\)
\(\frac{1}{2}\)
\(\frac{-1}{2}\)
7.
The value of \(\sin15^o\) is ______.
\(\frac{\sqrt{3}+1}{2\sqrt{2}}\)
\(\frac{\sqrt{3}-1}{2\sqrt{2}}\)
\(\frac{\sqrt3}{\sqrt2}\)
\(\frac{\sqrt3}{2\sqrt2}\)
8.
If \(\tan\theta=\frac{1}{\sqrt5}\) and \(\theta\) lies in the first quadrant, then \(\cos\theta\) is _______.
\(\frac{1}{\sqrt6}\)
\(\frac{-1}{\sqrt6}\)
\(\frac{\sqrt5}{\sqrt6}\)
\(\frac{-\sqrt5}{\sqrt6}\)
9.
The radian measure of 37o30' is ______.
\(\frac{5\pi}{24}\)
\(\frac{3\pi}{24}\)
\(\frac{7\pi}{24}\)
\(\frac{9\pi}{24}\)
10.
The degree measure of \(\frac{\pi}{8}\) is ______.
20o60'
22o30'
20o60'
20o30'
1.
\((\sin A+\cos A)^2=1\)
\(\sin ^2 \mathrm{~A}+\cos ^2 \mathrm{~A}+2 \sin \mathrm{A} \cos \mathrm{A}=1\)
\(1+\sin 2 \mathrm{~A}=1 \Rightarrow \sin 2 \mathrm{~A}=0\)
2.
\(\sec A(-\cos A)=\frac{1}{\cos A}(-\cos A)=-1\)
3.
\(\frac{1}{2}\left(2 \sin 15^{\circ} \cos 15^{\circ}\right) =\frac{1}{2} \sin 2\left(15^{\circ}\right)=\frac{1}{2} \sin 30^{\circ} =\frac{1}{2} \times \frac{1}{2}=\frac{1}{4}\)
4.
\(\sin (28+17)=\sin 45^{\circ}=\frac{1}{\sqrt{2}}\)
5.
\(\cos \left(-480^{\circ}\right) =\cos 480^{\circ}=\cos \left(360^{\circ}+120^{\circ}\right) \)
\(=\cos 120^{\circ}=\cos \left(180^{\circ}-60^{\circ}\right) \)
\(=-\cos 60^{\circ}=-1 / 2 \)
6.
\(\sin \left(-420^{\circ}\right) =-\sin 420^{\circ}=-\sin (360+60) =-\sin 60^{\circ}=\frac{-\sqrt{3}}{2} \)
7.
\(\sin15^o = \sin(45^o - 30^o) = \sin45^o \cos 30^o - \cos 45^o \sin 30^o\)
\(= \frac{\sqrt{3}}{2\sqrt{2}} - \frac{1}{2\sqrt{2}}\)
8.
\(\sec \theta =\sqrt{1+\tan ^2 \theta}=\sqrt{1+\frac{1}{5}}=\sqrt{\frac{6}{5}} \)
9.
\(37^{\circ} 30^{\prime}=37 \frac{1}{2}^{\circ}=\frac{75}{2} \times \frac{\pi}{180}=\frac{5 \pi}{24}\)
10.
\(\frac{\pi}{8}=\frac{180^{\circ}}{8}=22 \frac{1}{2}^{\circ}=22^{\circ} 30^{\prime}\)
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 11th Standard Subjects
Maths
Commerce
Economics
Biology
Business Maths and Statistics
Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
Computer Science
Accountancy
Computer Applications
History
Computer Technology
Commerce
Computer Applications
Computer Technology
Tamil
English
French
Tamilnadu Stateboard Standards
