Infinite Precalculus - Trigonometric Functions
Precalculus
Name___________________________________
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Trigonometric Functions
Date________________ Period____
Verify each identity.
1) -sin xsec x = -tan x
2) tan2 x - cot2 x = sec2 x - csc2 x
3) tan2 x + csc2 x = sec2 x + cot2 x
1
sin x
4)
=
csc x + 1 sin x + 1
cos2 x
1
5)
=
sin2 x sec2 x - 1
6)
1
= cos xcsc2 x
sec xsin2 x
Worksheet by Kuta Software LLC
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Find the exact value of each expression without using a calculator.
7) tan-1 - 3 3
8) cos-1 - 3 2
9) cos-1 -1
10) sin-1 - 1 2
( ) 11)
cos-1
p csc
2
12) sec sin-1 15 4
13) tan-1 (cos p)
( ) 14)
sin-1
p tan -
4
15) sec cos-1 8 17
16) tan sin-1 5 5
17) csc tan-1 3
( ) 18)
cos-1
p cot
2
Write each trigonometric expression as an algebraic expression.
19) cot cos-1 x
20) cot sin-1 1 x
21) sec sin-1 2x
22) sec tan-1 3x
Worksheet by Kuta Software LLC
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Find the amplitude, the period in radians, the phase shift in radians, and the vertical shift. Then sketch the graph using radians.
( ) q p
23) y = 4sin + - 1 2 3
( )p
24) y = 3cos q + 3
25) y = 2cos 4q + 1
26) y = -2 + 3sin 2q
( )5p
27) y = tan 2q + 4
q 28) y = 3tan - 1
3
Worksheet by Kuta Software LLC
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Find the exact value of each trigonometric function without using a calculator.
9p 29) sin -
4
8p 30) cot -
3
17p 31) tan
3
11p 33) tan -
4
23p 35) csc -
4
5p 32) sec -
3
16p 34) sin
3
9p 36) cos -
4
Use the given point on the terminal side of angle q to find the value of the trigonometric function indicated.
37) csc q ; (-3, -2)
38) sec q ; (-2 3, -2)
39) cos q ; ( 15, -7)
40) tan q ; (-9, - 19)
41) sin q ; (2, -11)
42) cot q ; (-2 5, 4)
Worksheet by Kuta Software LLC
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