Class 10 CBSE Maths Introduction to Trigonometry Boards Questions
Here we provide Class 10 Maths important notes,board questions and predicted questions with Answers for chapter Introduction to Trigonometry. These important notes,board questions and predicted questions are based on CBSE board curriculum and correspond to the most recent Class 10 Maths syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
Class 10 CBSE Introduction to Trigonometry Boards Questions
Introduction to Trigonometry Boards Questions
2018
Q1
Without using trigonometrical tables, evaluate:
cosec2 57°— tan2 33° + cos 44° cosec 46° — √2cos 45° — tan2 60°
solutions
cosec2 57°— tan2 33° + cos 44° cosec 46° — √2cos 45° — tan2 60°
solutions
Q2
(A) If 4 tan θ= 3, evaluate (4 sinθ- cos θ +1/4 sinθ+ cos θ -1)
OR
(B) If tan 2A cot (A — 180), where 2A is an acute angle, find the value of A.
solutions
OR
(B) If tan 2A cot (A — 180), where 2A is an acute angle, find the value of A.
solutions
Q3
Prove that
solutions
sin A - 2 sin3A
/
2cos3A - cosA
= tan A
solutions
2019
Q1
Evaluate :
sin2 600 + 2 tan 450 — cos2 300
OR
If sin A = 3/4 , calculate sec A.
solutions
sin2 600 + 2 tan 450 — cos
OR
If sin A = 3/4 , calculate sec A.
solutions
Q2
Evaluate :
solutions
3 sin 430
/
cos 470
-
cos 37° cosec 53°
/
tan 5° tan 25° tan45° tan65° tan85°
solutions
Q3
(A) Prove that :
OR
(B) Prove that :
solutions
tan θ
/
1-cot θ
+
cot θ
/
1-tan θ
=1+ sec θ cosec
OR
(B) Prove that :
sin θ
/
cot θ + cosec θ
=2 +
sin θ
/
cot θ - cosec θ
solutions
2020
Q1
(A)
OR
(B) (sin2° +
OR
(C) (1 + tan2 θ)(1 - sin θ)(1 + sin θ)
solutions
cos 80°
/
sin 10°
+ cos 590 cosec 31°= __________
OR
(B) (sin2° +
1
/
1+ tan2°
)
OR
(C) (1 + tan2 θ)(1 - sin θ)(1 + sin θ)
solutions
Q2
If sin 0 + cos 0 = √3 then prove that tan 0 + cot 0 = 1.
solutions
solutions
Q2
If tan(A + B) = √3
and tan(A—B)=1 /√3,A>B
then the value of A is __
solutions
solutions
Q4
If 5 tan 0 = 3, then what is the value of (
solutions
5 sinθ - 3cosθ
/
4sinθ + 3cosθ
)
solutions
Q5
(A) Prove that √
Or
(B) Prove that
solutions
1 - sinθ
/
1 + sinθ
=sec θ - tan θ
Or
(B) Prove that
tan2 θ
/
1 + tan2 θ
+
cot2 θ
/
1 + cot2 θ
=1
solutions
Q6
Prove that (l + tan A — sec A) x (l + tan A + sec A) = 2 tan A
Or
Prove that
solutions
Or
Prove that
cosec 0
/
cosec 0 — 1
+
cosec 0
/
cosec 0 + 1
= 2 sec20
solutions
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