Find the angles to the nearest 1/2 degree, using the functions given.
a. Sin = .2713
b. Cos = .7630
c. Tan = .2773
= _____
= _____
= _____
57a. Answers:
a.
= 15.5
b.
= 40.5
c.
=15.5
If you had trouble getting these values, check your arithmetic.
Seek help from the
instructor if necessary.
57b. And the function for the angles given.
a.
= 45
b.
= 45.5
c.
= 16.5
Sin = _____
Cos = _____
Tan = _____
57b. Answers.
a. Sin = .7071
b. Cos = .7009
c. Tan = .2962
58.
Trying to memorize formulas such as the trig functions can be difficult. However, you are
required to know them. As a memory "crutch," here is a saying that you may use to help
you remember them: "Oscar Had A Heap Of Apples." Take the underlined capital
letters, and group them vertically as in
the block to the right.
Each ratio is
equal to a trig function. The functions
are listed in the order in which you
learned them. Complete the formulas in
the block above by writing the correct
function in each blank.
IT0350
1-32
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