Trigonometry Quiz | Trigonometry Objective Type Questions and Answers

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Questions
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

Answer: 9.5
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

Answer: 0
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23 sin (90° – A) =
A cos A
B tan A
C sin A
D cosec A

Answer: cos A
24 If cosec A – cot A = —, then cosec A =?
A 41/40
B 41/50
C 31/30
D None

Answer: 41/40
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

Answer: 1

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