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# Eleventh Grade (Grade 11) Trigonometry Questions

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Grade 11 Trigonometry CCSS: HSF-TF.A.2
$(-4pi)/3$ is equivalent to which of the following?
1. $(-2pi)/6$
2. $(4pi)/3$
3. $pi/3$
4. $(2pi)/3$
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. $15/17$
If $sin(theta)=7/25$, what is $tan(theta)$?
1. $7/24$
2. $24/25$
3. $7/8$
4. $24/7$
Grade 11 Trigonometry CCSS: HSF-BF.B.3
State the amplitude of the function $y=1/3cos(x-2)$.
1. $1/3$
2. $pi$
3. $-2$
4. $-pi$
5. none of these are correct
Grade 11 Trigonometry CCSS: HSF-BF.B.3
If the base graph of $y=cosx$ was stretched to an amplitude of 4 and a period of $3pi$, what would be the new function?
1. $y=1/4 cos 3x$
2. $y=4+cos (3/2 x)$
3. $y=cos (3x-4)$
4. $y=4cos(2/3 x)$
5. none of these are correct
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. $3/4$
Grade 11 Trigonometry CCSS: HSF-TF.A.2
In radians, $x^o=$
1. $pi/(180x)$
2. $180/(pi x)$
3. $(180x)/pi$
4. $(pi x)/180$
Using SOH CAH TOA, what does the first part, SOH, stand for?
2. sine=hypotenuse/opposite
4. sine=opposite/hypotenuse
Using SOH CAH TOA, what does CAH stand for?
1. cosine=opposite/hypotenuse
Convert 210 degrees into radians.
1. $(9pi)/2$
2. $(3pi)/8$
3. $(12)/(5pi)$
4. $(7pi)/6$
5. none of these are correct
What is the reference angle for $(7 pi) /4 ?$
1. $pi/4$
2. $pi/3$
3. $pi/6$
4. $(3pi)/4$