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Monica [59]
3 years ago
15

If sec a = 5/4 and a is an angle in quadrant iv find the value of cos a

Mathematics
1 answer:
wariber [46]3 years ago
8 0
We know that
<span>sec a = 5/4
</span>sec(a)=1/cos(a)
then 
cos (a)=1/sec(a)
cos (a)=1/(5/4)=4/5---> is positive because the function cos is positive in IV quadrant

the answer is cos(a)=4/5
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