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  • NDA Exam Mathematics Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Mathematics Trigonometry for NDA Exam student. This free online Mathematics study material for NDA Exam will help students in learning and doing practice on Trigonometry topic of NDA Exam Mathematics. The study material on Trigonometry, help NDA Exam Mathematics students to learn every aspect of Trigonometry and prepare themselves for exams by doing online test exercise for Trigonometry, as their study progresses in class. Kidsfront provide unique pattern of learning Mathematics with free online comprehensive study material and loads of NDA Exam Mathematics Trigonometry exercise prepared by the highly professionals team. Students can understand Trigonometry concept easily and consolidate their learning by doing practice test on Trigonometry regularly till they excel in Mathematics Trigonometry.


Trigonometry
Fill in the blank: sin A = ....... x cos A

a) Cos A
b) Cot A
c) Tan A
d) Sin A



Answer
Solution
Correct Answer Is : Tan A
Solution Is : Sin A = X * cos A X = sin A / cos A = tan A
Find the value of sin230 cos245 + 4 tan230 + (1/2) sin290 - 2 cos290 + 1/24 .

a) 3
b) 4
c) 2
d) 1



Answer
Solution
Correct Answer Is : 2
Solution Is : Sin230 cos245 + 4 tan230 + (1/2) sin290 - 2 cos290 + 1/24 = (1/2/2 x (1/√2)2 + 4 (1/√3)2 + (1/2) (1)2 - 2 (0)2 + 1/24 = 1/4 ( 1/2) + 4 (1/3) + (1/2) + 1/24 = 1/8 + 4/3 +1/2 + 1/24 = ( 3 + 32 + 12 +1 ) / 24 = 48 / 24 = 2
If secθ + cosec (90o - θ) = 4 , ( 0<θ<90o), then the value of tanθ is

a) √3
b) 1/√2
c) 1/√3
d) 1



Answer
Solution
Correct Answer Is : √3
Solution Is :
The numerical values of 9/cosec2θ + 4 cos2θ + 5 / (1+tan2θ) is

a) 4
b) 5
c) 9
d) 1



Answer
Solution
Correct Answer Is : 9
Solution Is :
The value of sin 39° / cos 51° + 2 tan 11° tan 31° tan 45° tan 59° tan 79° -3 (sin2 21° + sin2 69° ) is

a) 2
b) -1
c) 1
d) 0



Answer
Solution
Correct Answer Is : 0
Solution Is :
The angles of evaluation of the top of a building and the top of the chimney on the roof of the building from a point on the ground are x and 45°, respectively. The height of building is h m. Then, the height of the chimney is (in m).

a) H cot x + h
b) H cot x - h
c) H tan x - h
d) H tan x + h



Answer
Solution
Correct Answer Is : H cot x - h
Solution Is :

a) -4
b) 4
c) ±4
d) ±2



Answer
Solution
Correct Answer Is : ±4
Solution Is :

a) 25/4 sq cm
b) 25/√3 sq cm
c) 25√3/sq cm
d) 25√3 sq cm



Answer
Solution
Correct Answer Is : 25√3/sq cm
Solution Is :

a) 30°
b) 45°
c) 60°
d) None of these



Answer
Solution
Correct Answer Is : 60°
Solution Is :
If A = tan 11° tan 29° B = 2 cot 61° cot 79° , then

a) A = 2B
b) A = -2B
c) 2A = B
d) 2A = -B



Answer
Solution
Correct Answer Is : 2A = B
Solution Is :