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# Eleventh Grade (Grade 11) Trigonometry Questions

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Grade 11 Trigonometry CCSS: HSF-TF.A.1
$(-4pi)/3$ is equivalent to
1. $(-2pi)/6$
2. $(4pi)/3$
3. $pi/3$
4. $(2pi)/3$
What is the reference angle for $(7 pi) /4 ?$
1. $pi/4$
2. $pi/3$
3. $pi/6$
4. $(3pi)/4$
If $sin(theta)=7/25$, what is $tan(theta)$?
1. $7/24$
2. $24/25$
3. $7/8$
4. $24/7$
If AC is 15, AB is 17, and BC is 8, then find $cos(B)$.
1. $8/15$
2. $15/8$
3. $8/17$
4. $15/17$
In radians, $x^o=$
1. $pi/(180x)$
2. $180/(pi x)$
3. $(180x)/pi$
4. $(pi x)/180$
If AC is 12, AB is 9, and BC is 15, then what is $cos(C)$?
1. $4/3$
2. $4/5$
3. $3/5$
4. $3/4$
Reference angles must be
1. in degrees.
2. positive and acute.
3. positive and obtuse.
POSITIVE angles go in which direction?
1. clockwise
2. counter-clockwise
3. up
4. down
If $theta$ is a reflex angle and $tantheta=-4/3$, then $sintheta=$
1. $-3/5$
2. $-4/5$
3. $5/3$
4. $5/4$
State the amplitude of the function $y=1/3cos(x-2)$:
1. $1/3$
2. $pi$
3. $-2$
4. $-pi$