Trigo for 3N

sin 40^o=

• sin140^o

• -sin140^o

• cos40^o

• sin-140^o

Tags

CCSS.HSF.TF.C.8

cos60^o=

• cos120^o

• sin60^o

• -cos120^o

• cos-120^o

Tags

CCSS.HSF.TF.C.8

cos130^o=

a) - cos 50^o

b) cos 50^o

c) a negative answer

d) sin 50^o

• a only

• a and b

• a and c

• a, c and d

Tags

CCSS.HSF.TF.C.9

Find an obtuse angle x if sin x = 0.6

• 36.9^o

• 53.1^o

• 143.1^o

• 36.9^o and 143.1^o

Tags

CCSS.HSF.TF.B.7

What will you use to find angle DBC?

• calculator

• sine rule

• cosine rule

• TOA CAH SOH

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find angle DBC, giving your answer correct to 3 significant figures.

You do not need to type the units.

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

How would you find the length of OM?

• TOA CAH SOH

• Sine rule

• Cosine rule

• Pythagoras Theorem

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which of the following statement/s is/are correct?

• $\frac{\sin R}{7}=\frac{\sin42}{6}$

• $\frac{\sin7}{R}=\frac{\sin6}{42}$

• $\frac{\sin R}{6}=\frac{\sin42}{7}$

• $\frac{\sin R}{42}=\frac{\sin7}{6}$

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which statement(s) is/are correct?

• $OM^2=8^2+8^2-2\left(8\right)\left(8\right)\cos\ 45\degree$

• $\frac{OM}{\sin60}=\frac{8}{\sin45}$
  

• $\frac{OM}{\sin45}=\frac{8}{\sin60}$

• $\tan45\degree=\frac{OM}{8}$
  

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11