Homework Help: trig

Posted by Jane on Wednesday, April 29, 2009 at 8:27pm.

Give the measure of the acute angle with each given value to the nearest tenth of a degree.

cos A = 0.1 (84.3 degrees)
sec D = 1.8 (65.3 degrees)

That is all it gives :(
How would I go about solving this?

trig - Chris, Wednesday, April 29, 2009 at 10:38pm
cos A = .1

In your calculator type in:

cos^-1(.1)

and for sec D:

1. 1/cos D = 1.8
2. 1.8 Cos D = 1
3. 1/1.8 = Answer
4. cos^-1 (Answer from step 3)

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