AASL Trigonometry Revision

sin π/4

• √2∕2
• 1/2
• √3/2
• 0

Tags

CCSS.HSF.TF.A.2

cos 4π/3

• -√3/2
• √3/2
• 1/2
• -1/2

Tags

CCSS.HSF.TF.A.2

Find sin(-240°)

• (√3)/2)

• (-1/2)

• (√2/2)

• (1/2)

Tags

CCSS.HSF.TF.A.4

Solve cos(x) = √3/2

• π/6, 5π/6

• 2π/3, 4π/3

• π/6, 11π/6

• 5π/6, 11π/6

Give one result for sin^-1(^√2/₂):

• π/4

• π/3

• π/2

• π

Find AC

• 10.1

• 10.0

• 10.9

• 8.86

Find the missing angle θ

• 27.9^o

• 29.2^o

• 26.8^o

• 45^o

If $\sin\theta=\frac{\sqrt{5}}{3}$  , then  $\cos2\theta$  equals

•  $\frac{1}{3}$  

•  $-\frac{1}{3}$  

•  $\frac{1}{9}$  

•  $-\frac{1}{9}$  

Tags

CCSS.HSF.TF.C.9

1 - cos²x = ?

• sin² x

• tan² x

• -sin² x

• cos2x

Find the exact value of  $\sin2x$    if  $\sin x=\frac{12}{13}$   and x is in the first quadrant. 

•  $\frac{120}{169}$  

•  $\frac{25}{169}$  

•  $\frac{60}{169}$  

•  $\frac{5}{13}$  

Tags

CCSS.HSF.TF.C.9