cadereymer24
16.10.2019 •
Mathematics
Ihave no idea what it means and the test is tomorrow.
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Ответ:
H. 2
Step-by-step explanation:
√(1 − cos² x) / sin x + √(1 − sin² x) / cos x
Use Pythagorean identity.
sin² x + cos² x = 1
So:
1 − cos² x = sin² x
and
1 − sin² x = cos² x
Substitute:
√(sin² x) / sin x + √(cos² x) / cos x
sin x / sin x + cos x / cos x
1 + 1
2
Ответ:
D. 36
Step-by-step explanation:
-12/2 = -6
(-6)^2 = 36
c = 36