CBSE|CLASS X|MATHS WORKSHEET|TRIGONOMETRY
[Pages:2]CBSE|CLASS X|MATHS WORKSHEET|TRIGONOMETRY
WWW. INTRODUCTION TO TRIGONOMETRY
1) If sin cos , find the value of ' ' .
2) If sin A = 3 , calculate cos A 5
3) Evaluate: cos 480cos 420 - sin 480 sin 420
4) If A, B and C are the interior angles of a triangle ABC, then show that tan B C cot A . 2 2
5) Prove that 1 cos A cosecA cot A . 1 cos A
6) If cosec 13 , evaluate 2sin 3cos .
12
4sin 9cos
7) In a right angled ABC, B = 900.If BC = 1 , then find AB
AB 3
AC
8) Express the trigonometric ratioscos A, tan A and sec A in terms of sin A
9) In ABC, right-angled at C find cos A, tan A and cosec B if sin A = 24 25
10)
In triangle ABC, right-angled at B, if tan A =
1 3
,
find
the
value
of:
(i) sin A cos C + cos A sin C (ii) cos A cos C ? sin A sin C
11) Prove that sec A (1 ? sin A)(sec A + tan A) = 1.
12) If A, B and C are interior angles of a triangle ABC, then show that s + =
2
2
13) Evaluate: tan 2 60 4cos2 45 3sec2 30 5cos2 90 cosec30 sec60 cot2 30
14) Prove that cos A sin A 1 cosecA cot A using the identity cosec2 A 1 cot2 A . cos A sin A 1
15) Write all the other trigonometric ratios of A in terms of sec A.
For Easy way of learning IIT JEE math to watch and subscribe YouTube|MATHSTIMES_THIRUMURUGAN
Page 1
CBSE|CLASS X|MATHS WORKSHEET|TRIGONOMETRY
WWW. 16) Prove the following identity, where the angles involved are acute angles for which the
expression is defined:
1 sin A
= sec A + tan A
1 sin A
17) In an acute angled triangle ABC if sin(A + B ? C) = 1 and cos( B + C ? A)= 1 find
2
2
A , B and C
18)
Prove that :
1+ 2 1+ 2
=
1-
2
=
1-
2
19) Evaluate :
(i)
2 630 + 2 270 2 170 + 2 730
(ii) sin 25o cos65o + cos25o sin65o
20) In OPQ, right-angled at P, OP = 7 cm and OQ ? PQ = 1 cm. Determine the values of sin Q and cos Q.
21) If B and Q are acute angles such that sin B = sin Q, then prove that B = Q.
22) If sin (A ? B) = 1 , cos (A + B) = 1 , 0? B, find Aand B.
2
2
23) If sin 3A = cos (A ? 26?), where 3A is an acute angle, find the value of A.
24) Prove that sin A cos A 1
1
, using the identity sec2 1 tan2 .
sin A cos A 1 sec A tan A
25) Prove that (cosecA sin A)(secA cos A)
1
.
tan A cot A
For Easy way of learning IIT JEE math to watch and subscribe YouTube|MATHSTIMES_THIRUMURUGAN
Page 2
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- cbse x mathematics 2018 nextgurukul
- in
- class 10th mathematics standard solved all centre
- class x mathematics basic 241 sample question paper
- mathematics ix x session 2019 20 cbse
- class x 2019 20 mathematics standard 041 sample
- cbse 10th maths 2017 unsolved paper summative
- cbse class x maths worksheet trigonometry
- unfiled notes page 1 cbse
- design of question paper mathematics class x
Related searches
- maths worksheet for class 1
- cbse class 8 maths book pdf
- maths cbse class 10
- cbse class 8 maths solutions
- cbse class 8 science solutions
- cbse class 10 maths textbook
- cbse class 8 ncert maths book
- cbse class 10 maths book pdf
- cbse class 10 maths solution
- cbse class 10 maths book exemplar
- cbse class 9 maths solution
- cbse class 11 maths textbook