Class 10 Mathematics: Introduction to Trigonometry
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Q1 · MCQ · 1 mark
In a right-angled triangle, if angle B is 90 degrees, and sin A = 3/5, what is the value of cos A?
Q2 · MCQ · 1 mark
If tan Θ = 1, then the value of Θ is:
Q3 · MCQ · 1 mark
Which of the following trigonometric ratios is defined as the ratio of the adjacent side to the hypotenuse in a right-angled triangle?
Q4 · FILL · 1 mark
The value of sin 60° is __________.
Q5 · MCQ · 1 mark
If sin A = cos A, then the value of A is:
Q6 · FILL · 1 mark
The reciprocal of tan Θ is __________.
Q7 · SHORT · 2 marks
In a right-angled triangle ABC, with the right angle at B, define sin A in terms of the sides of the triangle.
Q8 · MCQ · 1 mark
What is the value of (sec A – tan A)(sec A + tan A)?
Q9 · FILL · 1 mark
The value of cosec 30° is __________.
Q10 · SHORT · 2 marks
Explain why sin A can never be greater than 1 for an acute angle A.