noahmartinez3636
05.08.2019 •
Mathematics
If sin theta = -5/7 , which of the following are possible? a) cos theta = √24/7 , and tan theta = 5/√24 b) cos theta = -√24/7, and tan theta = 5/√24 c) sec theta = 7/√24 , and tan theta = -5/√24 d)sec theta = -7/5, and tan theta = 5/√24
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Ответ:
Solution:
we are given that
As we know that
Substitute the value we get
Since
So here
As we know that
Hence the correct option is C.
Ответ:
It is given that
And according to pythagorean identity, we will get
Substituting the value of sin theta, we will get
and sec theta is the reciprocal of cos theta.
SO possible values of sec theta are
And tan theta is the ratio of sin theta and cos theta
So possible values of tan theta are
So the correct options are B and C .
Ответ:
-
original problem: 2/3 ÷ 1/3
You keep the first fraction, change the sign, and flip the second fraction:
-
2/3 x 3/1 = 6/3 or 2