Trig Equations

Trig Equations

﻿1) , because .
2) , because
3) , because
4) , because
5) , because
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Range of is , so answer is incorrect.

7)
Range of is , so answer is correct.
8)
Range of is , so answer is incorrect.

9)
Range of is , so answer is correct.
10)
Range of is , so answer is incorrect.

11)
Range of is , so answer is correct.
12)
Range of is , so answer is correct.
13)
Range of is , so answer is incorrect.

14)
Range of is , so answer is incorrect.

15)
Swap and :
Solve for :

16)
Swap and :
Solve for :

17)
Swap and :
Solve for :

18)
Swap and :
Solve for :

19)
Swap and :
Solve for :

20)
Swap and :
Solve for :

21)
Swap and :
Solve for :

22)
Domain of is .
Range of is (since )
Domain of is range of : .
23)
Domain of is .
Range of is (since )
Domain of is range of : .
24)
Domain of is .
Range of is (since )
Domain of is range of : .
25)
Domain of is .
Range of is (since )
Domain of is range of : .
26)
Domain of is .
Range of is .
Domain of is range of : .
27)
Domain of is .
Range of is (since )
Domain of is range of : .
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46)
Let , then we need to find .
We have that .

According to Pythagorean identity , equation can be rewritten as

We took square root with positive sign because and have same sign on .

47)
Let , then we need to find .
We have that .

According to Pythagorean identity , equation can be rewritten as

We took square root with positive sign because is positive on .

48)
Let , then we need to find .
We have that .

According to Pythagorean identity , equation can be rewritten as

49)
Let , then we need to find .
We have that .

According to Pythagorean identity , equation can be...