Inverse Trigonometric Functions Test
Inverse Trigonometric Functions
This is Inverse Trigonometric Functions Test-04 for CBSE class 12 Maths.. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
\({\tan ^{ - 1}}( - 2) + {\tan ^{ - 1}}( - 3)\)is equal to
- A\(\frac{{3\pi }}{4}\)
- B\(\frac{\pi }{4}\)Correct
- C\(\frac{{5\pi }}{4}\).
- D\( - \frac{\pi }{4}\)
2
The number of solutions of the equation \({\sin ^{ - 1}}x - {\cos ^{ - 1}}x = {\sin ^{ - 1}}\left( {\frac{1}{2}} \right)\)is
- A1Correct
- B2
- C3
- Dinfinite.
3
Domain of f(x) = \({\sin ^{ - 1}}x - se{c^{ - 1}}x\;is\;\)
- A0 or 1
- B{ -1 ,1}Correct
- C{ 0, 1}
- Dnone of these
4
The number of solutions of the equation \({\cos ^{ - 1}}(1 - x) - 2{\cos ^{ - 1}}x = \frac{\pi }{2}is\)
- Anone of these.
- BOneCorrect
- Ctwo
- Dmore than one
5
\({\tan ^{ - 1}}\frac{1}{4} + {\tan ^{ - 1}}\frac{2}{9} = \)
- A\(\frac{1}{2}{\cos ^{ - 1}}\frac{3}{5}\)Correct
- B\(\frac{1}{2}{\tan ^{ - 1}}\frac{3}{5}\)
- C\(\frac{1}{2}{\tan ^{ - 1}}\frac{1}{2}.\)
- D\(\frac{1}{2}{\sin ^{ - 1}}\frac{3}{5}\)
6
\(\cos \left( {{{\cos }^{ - 1}}\left( {\frac{7}{{25}}} \right)} \right) = \)
- A\(\frac{{25}}{7}\)
- Bnone of theseCorrect
- C\(\frac{{24}}{{25}}\)
- D\(\frac{{25}}{{24}}\)
7
\(4{\tan ^{ - 1}}\left( {\frac{1}{5}} \right) - {\tan ^{ - 1}}\left( {\frac{1}{{239}}} \right) = \)
- A\(\frac{\pi }{4}.\)Correct
- B\(\frac{\pi }{2}\)
- C\(\pi \)
- D\(\frac{\pi }{3}\)
8
\({\sin ^{ - 1}}\left( {\frac{1}{{\sqrt 5 }}} \right) + {\cot ^{ - 1}}(3) = \)
- A\(\frac{\pi }{6}\)
- B\(\frac{\pi }{3}\)
- C\(\frac{\pi }{4}.\)Correct
- D\(\frac{\pi }{2}\)
9
The solution of the equation \({\cos ^{ - 1}}(\sqrt 3 x) + {\cos ^{ - 1}}x = \frac{\pi }{2}\)is given by
- A\( \pm \frac{1}{2}\)
- B\( - \frac{1}{2}\)
- Cnone of these.
- D\(\frac{1}{2}\)Correct
10
If \({\cos ^{ - 1}}x + {\sin ^{ - 1}}\left( {\frac{x}{2}} \right) = \frac{\pi }{6},\) then x =
- A\(\frac{1}{{\sqrt 2 }}\)
- B0
- C1Correct
- D\( \pm \sqrt {3.} \)
11
If \({\tan ^{ - 1}}x + {\tan ^{ - 1}}\frac{1}{7} = \frac{\pi }{4}\), then x =
- A\(\frac{3}{4}\)Correct
- B\(\frac{7}{6}\)
- C\(\frac{4}{3}\)
- D\(\frac{6}{7}\)
12
\({\tan ^{ - 1}}3 - {\tan ^{ - 1}}2 = \)
- A\({\tan ^{ - 1}}\left( {\frac{2}{3}} \right)\)
- B\({\tan ^{ - 1}}\left( {\frac{1}{7}} \right)\)Correct
- C\({\tan ^{ - 1}}\left( {\frac{3}{2}} \right)\)
- D\({\tan ^{ - 1}}\left( {\frac{1}{5}} \right).\)
13
The value of \({\cos ^{ - 1}}( - 1) - {\sin ^{ - 1}}(1)\) is
- A\(\pi \)
- B\(\frac{\pi }{2}.\)Correct
- C\(\frac{{3\pi }}{2}\)
- D\( - \frac{{3\pi }}{2}\)
14

- A\(\frac{1}{{\sqrt 3 }}\)Correct
- B2
- C\(\frac{1}{{\sqrt 2 }}\)
- D\(1`\)
15
\({\cot ^{ - 1}}\left( {\frac{5}{3}} \right) + {\cos ^{ - 1}}\left( {\frac{4}{5}} \right) = \)
- A\({\cot ^{ - 1}}\left( {\frac{{27}}{{11}}} \right)\)
- B0
- C\({\cos ^{ - 1}}\left( {\frac{{27}}{{2\sqrt {38} }}} \right)\)
- D\({\tan ^{ - 1}}\left( {\frac{{27}}{{11}}} \right)\)Correct