If cos(t)=−9/11 where π<t<3π2, find the values of the following trigonometric function cos(t/2)
2 answers:
Cos(t/2) I got .45 is that what you were looking for or do I need to plug it into the equation up top? can you give me notes of something? cos( -9/11/2) = .45
Answer:
Step-by-step explanation:
The relationship between cos(t) and cos( ) is:
where a is equal to +1 or -1 is same as same sign which cos(t) holds.
Thus,
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Answer:y
=
4
x
2
−
2
Step-by-step explanation: