Identities
Simplifying Identities
Pythagorean Identities
Trigonometry
Trig specific angles
100

1 / (sin x)

cosec x

100
(sec x)(cos x)
What is 1?
100
sin²x + cos²x
What is 1?
100

sin x = √3 / 2 then value of x?

60  degrees

100

sin 30

What is 1/2?

200
(sin x) / (cos x)
What is tan x?
200
(tan x)(cos x)
What is sin x?
200
1 + cot²x
What is csc²x?
200

Value of x for cos x = ½

60 degree 

200

tan 45

1
300
1 / (sec x)
What is cos x?
300
(sec x) / (tan x)
What is csc x?
300
1 - cos²x
What is sin²x?
300

Sec2x= ?

1 + tan2x

300

Cosec 300 ?

2

400
(cos x) / (sin x)
What is cot x?
400

sin x (cosec x - sin x)

Cos2x

400
sec²x - 1
What is tan²x?
400

Simplify  (1--sin2x)/cos x

cos x

400

Cot 600

1/sq3

500

Express cos (x) in terms of sinx

Sq( 1- sin2x)

500

cosec x - sin x

(cos²x) / (sin x) or (cos x)(cot x) 

500

(1 + cosec  x)(1 - cosecx)

- cot²x 

500

Simplify cosec2 x - [(cos 2x)/(sin 2 x)] - cos2 x completely as one trig function

Sin2x

500

Cot 900

0

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