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Free download in PDF Trigonometry Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
The value of sin² 5° + sin² 10° + sin² 15° + … + sin² 90° is equal to
[A]
9.5
[B]
8.5
[C]
8
[D]
5
(22)
The value of the expression [cosec (75° + θ) – sec (15° – θ) – tan (55° + θ) + cot (35° – θ)] is [NCERT Exemplar Problems]
[A]
0
[B]
1
[C]
1/2
[D]
None of these
(23)
sin (90° – A) =
[A]
cos A
[B]
tan A
[C]
sin A
[D]
cosec A
(24)
If cosec A – cot A = —, then cosec A =?
[A]
41/40
[B]
41/50
[C]
31/30
[D]
None
(25)
If A and (2A – 45°) are acute angles such that sin A = cos (2A – 45°), then tan A is equal to
[A]
1
[B]
√3
[C]
0
[D]
None
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