Trigonometric Ratios of Complementary Angles
Trending Questions
- 1√2
- √3
- 1√3
- 0
(cos 83∘−sec 76∘)
in terms of trigonometric ratios of angles between 0∘ and 45∘.
- (sin 7∘−cosec 14∘)
- (sin 17∘−cosec 24∘)
- (cos 7∘−cosec 14∘)
- (sin 17∘−sec 14∘)
Express (sin 85∘ + cosec 85∘) in terms of trigonometric ratios of angles between 0∘ and 45∘.
Express sin67∘+cos75∘ in terms of trigonometric ratios of angles between 0∘ and 45∘.
1+sin(90∘−θ)−cos2(90∘−θ)cos(90∘−θ) [1+sin(90∘−θ)]=
cot θ
tan θ
1
0
(r1 is the radius of the circle opposite the angle A)
- r1=2Δs−a, r1=4RcosA2sinB2sinC2
- r1=Δs−a, r1=4RsinA2cosB2cosC2
- r1=Δ(s−a)(s−b)(s−c), r1=4RcosA2sinB2sinC2
- r1=2Δ(s−a)(s−b), r1=4RcosA2sinB2sinC2
Express (sin 75∘+cosec 75∘) in terms of trigonometric ratios of angles between 0∘ and 15∘.
- (sec 15∘+sin 15∘)
- (cos 45∘+sec 45∘)
- (cos 15∘+sec 15∘)
- (cos 25∘+sec 25∘)
If sinθ−cosθ=0, then the value of (sin4θ+cos4θ) is
(A) 1
(B) 34
(C) 12
(D) 14
Show that :
cos38∘cos52∘−sin38∘sin52∘=0
sin 42∘sec 48∘+cos 42∘cosec 48∘−43sin230∘=___
23
−23
1
13
tan 1∘.tan 89∘.tan 2∘.tan 88∘
- 0
- 1
- 2
- Not defined
sin 43∘ × 1cos 47∘ × sec 63∘ × 1cosec 27∘
- sec263∘
- cosec 27∘
- 1
- 2
Evaluate the following:
(i) sin60∘cos30∘+sin30∘cos60∘
- 12
- 2
- 1
- 0
Evaluate :
sin 18∘cos 72∘
tan 90∘
In the given triangle ABC which is right-angled at B, if sin A =1213, then find the value of (sinA cosA + sinC cosC).
(120/169)
(60/169)
(12/13)
None of the options
sin 25° sin 50° sin 90° sec 40° sec 65° =
-1
0
1
2
- 1
- \N
- not defined
If sec(4A) = cosec(A−20∘), where 4A is an acute angle, then what is the value of A?
110∘
22∘
55∘
44∘
- True
- False
Evalute : sec29∘cosec61∘ + 2 cot 8∘ cot 17∘ cot45∘ cot73∘ cot82∘.
sin(90∘−θ)cos(90∘−θ)cot(90∘−θ)+sin2θ=
sin(B+C2)=cos(x),
then find thevalue of x.
- B2
- A2
- 2A
- A
tan (90°−A) cot Acosec2A−cos2A
- cosec 26∘
- cos 2∘
- cot 18∘
- sin 58∘
Which of the following options is equal to the given expresssion?
cot(90∘−θ)cosec2θ × secθ.cot3θsin2(90∘−θ)
√1+tan2θ
√1+sec2θ
cosθ
√1+sin2θ
- \N
- 1
- not defined
- 2