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Class-9 2078[Opt Maths] Flashcards | StudBud
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Class-9 2078[Opt Maths]
Class-9 2078[Opt Maths]
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1
Simplify the Trigonometric expression
sin B
cot B
csc B
tan B
2
What type of triangle are the trigonometric ratios based on?
equilateral
circle
right angle
isosceles
3
Trigonometric Identities
1 + tan A = sec A
sin 2 x + cos 2 x = 1
tan 2 x + 1 = sec 2 x
csc 2 x - cot 2 x = 1
4
How many types of Trigonometric Identities did we see in class
6
8
4
1
5
If cos(θ) = -5/13 and tan(θ) > 0, then sin (θ) =
-5/12
-12/13
5/12
5/13
6
Give the trigonometric ratios for Cos A
6/10
8/10
10/6
8/6
7
Simplify the Trigonometric expression
-1
-3
cotx + cscx
cos x
8
what are the basic/main three trigonometric ratios?
secant (sec), cotangent (cos) & coscant (csc)
sine (sin), cosine (cos) & tangent (tan)
sine (sin), cotagent (cot) & tangent (tan)
secant (sec) , cosine (cos) & sine (sin)
9
Simplify the Trigonometric expression
cosx sinx
secx
cosx
1+2sinxcosx
10
Which of these identities is NOT true?
secθ(cosθ) = 1
tan2θ + 1 = sec2θ
sinθ = tanθcosθ
1 + cotθ = cscθ
11
Pythagoras' Theorem applies to
any square
right angled triangles
any shape
any triangle
12
Select the name of the reciprocal trigonometric functions
Secan, Cosecannot, and Atanoffun
Sesect, Cosesect, and Atangent
Secangent, Cosect, and Cotangent
Secant, Cosecant, and Cotangent
13
Find the value of the Sin Z
3/4
3/5
4/5
21/28
14
Give the trigonometric ratios for Tan A
6/10
8/10
6/8
8/6
15
The reciprocal of the trigonometric function sine is?
Sine
Cotangent
Secant
Cosec
16
Identify the quotient identity of cot(x)
sin(x)/cos(x)
cos(x)/sin(x)
1/cot(x)
1/tan(x)
17
Trigonometric identities state that
sin A= Adj/Hyp
sin A= Opp/Hyp
sin A= Opp/Adj
sin A= Opp/Opp
18
The father of Trigonometry
Hipparchus
Menelaus
James Gregory
Henry Briggs
19
Which is a quotient identity?
\tan x=\frac{\sin x}{\cos x}
\sec\left(-x\right)=\sec x
\cot x=\frac{\sin x}{\cos x}
\tan x=\frac{1}{\cot x}
20
Trig Identities #1
b
a
c
d
