CBSE Class 10 Notes PDF
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📢 Today's Quiz Topic

Notes PDF - Introduction to Trigonometry

⏰ The quiz will start in 10 seconds! Get ready! 🧠
The value of 9 sec²A - 9 tan²A is equal to:
Anonymous Quiz
29%
1
52%
9
10%
8
10%
0
❤3🔥1
In a right-angled triangle ABC, right-angled at B, which of the following is true for angle A?
Anonymous Quiz
22%
sin A = Base/Hypotenuse
25%
cos A = Perpendicular/Hypotenuse
50%
tan A = Perpendicular/Base
3%
cot A = Hypotenuse/Base
🥰1
🥰1😱1
If 3 cot A = 4, what is the value of cosec A?
Anonymous Quiz
18%
4/5
24%
3/5
46%
5/3
12%
5/4
❤5🤯2
The expression (sec A + tan A)(1 - sin A) simplifies to:
Anonymous Quiz
10%
sin A
47%
cos A
26%
sec A
17%
cosec A
❤2
Which of the following trigonometric ratios is not defined for θ = 90°?
Anonymous Quiz
13%
sin θ
21%
cos θ
52%
tan θ
14%
cosec θ
❤2🤯1
The value of (1 - cos²A) × cosec²A is:
Anonymous Quiz
9%
0
58%
1
28%
tan²A
5%
cot²A
🤯1
If ΔPQR is right-angled at Q, PQ = 3 cm and PR = 6 cm, then ∠PRQ is:
Anonymous Quiz
32%
30°
33%
45°
20%
60°
14%
90°
🥰2
If sec θ + tan θ = x, then sec θ - tan θ is:
Anonymous Quiz
56%
1/x
20%
x
17%
x²
7%
1/x²
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The value of the expression 2 tan 30° / (1 - tan² 30°) is equal to:
Anonymous Quiz
30%
sin 60°
32%
cos 60°
30%
tan 60°
8%
sin 30°
👍2❤1🤯1
The value of tan 45° + cot 45° is:
Anonymous Quiz
25%
1
50%
2
14%
0
12%
1/2
❤1🤯1
What is the minimum value of cos θ for 0° ≤ θ ≤ 90°?
Anonymous Quiz
13%
-1
40%
0
28%
1/2
19%
1
❤4
The value of cos 0° × sin 30° × tan 45° is:
Anonymous Quiz
9%
1
24%
0
59%
1/2
8%
√3/2
🥰2❤1
If sin A = cos A for an acute angle A, then the value of A is:
Anonymous Quiz
8%
0°
25%
30°
58%
45°
9%
60°
🥰1
In ΔABC, right-angled at B, what is the value of cos(A + C)?
Anonymous Quiz
30%
0
23%
1
34%
1/2
12%
√3/2
❤1🤯1