You can do all these with the Google calculator site, if you don't have a pocket calculator.
a. 22 deg 43 min = 22.716667 deg
sin 22.716667 = 0.386174
Round off to 0.38617
It looks like you are doing these correctly.
To use Google calculator, you must first convert the angle to radians.
On most scientific calculators, you will find a key marked something like
it allows you to enter your angle in the form: degrees:minutes:seconds
e.g. for J)
you should get .964951637, your answer
your other answers are also correct.
I need to show my work so i cant use a calculater . did i show it correctly?
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