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@welshfella Could you help?
I have this question and another just like it and then I am finished with my homework.
sin x = opposite side / hypotenuse = 8 / 17
SOH-CAH-TOA - have you heard of that memory aid?
calculate 8/17 then use ur calculator to find the value of angle x enter sin-1 (value of x)
firrst use ur calculator to find 8/17 also!
So when I do 8/17 I get 0.47
Is that right?
more accurately its 0.4706
Then how do I do sin-1 on a calculator?
now thats the sine of x so to find x you use the sin-1 function on your calculator
there should be a button for it - you probably have to press the shift key as well - it must be a scientific calculator
no - x should be an angle between 20 and 30 degrees
have you got your calculator set to radians?
I'm not sure
because that would be the value of x in radians
I have a scientific calculator, but I don't know how to put in sin-1
is there a set up key on ur calc?
well you must have put sin-1 in correctly or you wouldn't have got 0.4899 which is exactly right in radians.
press SHIFT SIN-1 then 0.4706
yes thats correct
And that would round up to 29, correct?
you need to press the mode button to change rad to deg right?
Yes I figured out how to do that
This is my last one
Would the first one stay 28.07 or would it go up to 29 for my final answer?
no you need to round to the nearest 1 hundredth - that's 28.073 ---> 28. 07 the second place after the decimal pont is the hundreds so the answer is 28.07 degrees
apply SOH-CAH-TOA sin = opposite / hypotenuse cos = adjacent / hypotenuse tan = opposite / adjacent opposite angle y is 5 adjacent to angle y = 14 so which trig ratio , sin cos or tan do we use?
right! so we have tan y = 5/14 now you can find y in a similar way as for x in last problem this time use tan-1 on ur calc
5/14 = 0.35714 enter SHIFT Tan-1 0.35714
Which would be 19.65
these are quite easy after you've practiced a few
Yeah I think I will get the hang of them. Thank you so much, you were such a big help!