I think you should remember what sin cos tan are .. SOHCAHTOA
You can also check value of sin, cos, tan for different angles like 0, 30, 60...
]]>13. If the cos of an angle is .75, what is the csc?
A 1/sqrt(5)
B 9/sqrt(6)
C 6/sqrt(2)
D 3/sqrt(9)
E 4/sqrt(7) ♥
F 2/sqrt(3)
14. If the cot of an angle is 7/8, what is the tan?
A 8/7♥
B 6/5
C 4/10
D 3/9
E 4/3
F 7/8
13. If the cos of an angle is .75, what is the csc?
A 1/sqrt(5)
B 9/sqrt(6)
C 6/sqrt(2)
D 3/sqrt(9)
E 4/sqrt(7)
F 2/sqrt(3)
14. If the cot of an angle is 7/8, what is the tan?
A 8/7
B 6/5
C 4/10
D 3/9
E 4/3
F 7/8
Welcome to the forum!
Yes, those answers all correct. Nice work!
]]>11. What is the csc?
A 1.226
B 2.445
C 1.220
D 6.541
E 1.667♥
F 5.002
12. What is the cot?
A 1.009
B 2.341
C 5.211
D 1.333♥
E 5.294
F 3.025
9. What is the tan?
A 0.22
B 0.45
C 0.89
D 0.75♥
E 0.12
F 0.56
10. What is the sec?
A 1.32
B 3.69
C 2.45
D 1.25♥
E 1.82
F 1.47
Hope I did it correctly. Sorry for the extremely late reply, I've been busy.
]]>Welcome to the forum.
Do I detect questions from Compuhigh ?
In Q7 I think they are asking for the sin(90-x), in which case B 0.6 looks good to me.
And Q8, cos(90-x) = 0.8 is right too.
For Q9, tan(90-x) you need the opposite to that angle and then divide that by the adjacent.
(bobbym. they cannot want tan(x) because none of the answers will give that. I'm guessing that was in questions 1-6. After all, we wouldn't want them to go to all the expense of making a fresh diagram.
Q10 sec(90-x) = 1 over the cos of 90 -x so go back to Q8 and find 1/(that answer)
I suggest you post back answers for those two and then we can look at the rest.
Bob
]]>7) is incorrect. Use SOHCAHTOA.
8) is incorrect use SOHCAHTOA.
9) Use SOHCAHTOA, in this case tan(x) = opposite / adjacent. Can you fill it in?
Before we go any further some things have to be put in your memory banks.
1) Pythagorean theorem.
2) SOHCAHTOA.
]]>Still looking at the image above, one angle is angle x, and another is the right angle (90o). Since the angles in a triangle add up to 180o, the other angle will be 90-x. For the unlabeled angle above, the angle 90-x:
7. What is the sin?
A 0.3
B 0.6 ♥
C 0.9
D 0.4
E 0.2
F 0.5
8. What is the cos?
A 0.8 ♥
B 0.2
C 0.6
D 0.4
E 0.1
F 0.9
9. What is the tan?
A 0.22
B 0.45
C 0.89
D 0.75
E 0.12
F 0.56
10. What is the sec?
A 1.32
B 3.69
C 2.45
D 1.25
E 1.82
F 1.47
11. What is the csc?
A 1.226
B 2.445
C 1.220
D 6.541
E 1.667
F 5.002
12. What is the cot?
A 1.009
B 2.341
C 5.211
D 1.333
E 5.294
F 3.025
13. If the cos of an angle is .75, what is the csc?
A 1/sqrt(5)
B 9/sqrt(6)
C 6/sqrt(2)
D 3/sqrt(9)
E 4/sqrt(7)
F 2/sqrt(3)
14. If the cot of an angle is 7/8, what is the tan?
A 8/7
B 6/5
C 4/10
D 3/9
E 4/3
F 7/8
I've tried to work on this for hours, but I couldn't get the answers correctly. In fact, I'm not even sure I'm answering them correctly starting from number 9. The hearts mark the answer I chose.
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