Test 16
1.
\(a=\cos\left(-\samefrac{63\pi}{5}\right)\)
\(b=\cot\left(-\samefrac{71\pi}{5}\right)\)
\(c=\sec\left(-\samefrac{32\pi}{5}\right)\)
What are the signs respectively?
A) \(+,-,-\)B) \(-,-,+\)C) \(-,-,-\)D) \(+,-,+\)E) \(+,+,+\)
2.
\(x=\sin14^\circ\)
\(y=\sin28^\circ\)
\(z=\cos35^\circ\)
Which ordering is correct?
A) \(zB) \(zC) \(yD) \(xE) \(x
3.
\(a=\cos20^\circ\)
\(b=\sin20^\circ\)
\(c=\tan20^\circ\)
Which ordering is correct?
A) \(cB) \(aC) \(aD) \(bE) \(b
4.
\(a=\cos20^\circ\)
\(b=\cos550^\circ\)
\(c=\sin560^\circ\)
Which ordering is correct?
A) \(bB) \(bC) \(cD) \(cE) \(a
5.
\(k=\cos160^\circ\)
\(m=\sin610^\circ\)
\(n=\tan610^\circ\)
Which ordering is correct?
A) \(kB) \(kC) \(kD) \(m=kE) \(m
6.
\(a=\sin30^\circ\)
\(b=\sin150^\circ\)
\(c=\cos150^\circ\)
Which ordering is correct?
A) \(a=b=c\)B) \(b=cC) \(cD) \(cE) \(c
7.
\(a=\sin15^\circ\)
\(b=\cos70^\circ\)
\(c=\tan45^\circ\)
Which ordering is correct?
A) \(bB) \(cC) \(bD) \(aE) \(a
8.
\(a=\cos20^\circ\)
\(b=\sin130^\circ\)
\(c=\tan130^\circ\)
Which ordering is correct?
A) \(aB) \(cC) \(cD) \(bE) \(a