#7 is clearly wrong, since the angle is in QI, where all trig functions are positive.
Also, sec 54° 23’ = 1/cos 54° 23’ = 1/0.582 = 1.717
#8 HUH? You know that cos 0° = 1
How ever did you get that answer?
#9 also wrong. You know that cot 45° = 1, so it should be only a bit more than that.
Learn to do a sanity check, using what you already know, to see whether your results make sense. Just because you arrive at answer does not guarantee that it is correct.
You are clearly misusing your calculator. How about explaining just which steps you are performing?
are the answers correct?
evaluate the value of the following trig functions
7. sec 54° 23’
answer: -1.051
8. cos 36° 10’
answer: 1
9. cot 35° 21’ 45’’
answer: 3.732
1 answer
1 answer