Sine and Cosine of Acute Angles in Right Triangles

What type of triangles do you use the trig ratios with?

• any type

• right triangles

• obtuse triangles

• acute triangles

What is the acronym to help you remember the ratios to use in trigonometry?

• RIGHTANG

• SOHCAHTOA

• SHOCHATOA

• SAHCOHTOA

What does CAH stand for

• adjective over the hypotenuse.

• adjacent side over the hypotenuse side.

• adjacent side over the hippopotamus.

• hypotenuse side over the adjacent side.

What does SOH stand for

• hypotenuse over opposite
• adjacent over opposite
  

• opposite over hypotenuse
• adjacent over adjacent

Which side length is opposite of angle X?

• 20

• 29

• 21

• there is no opposite side

Which side length is the hypotenuse?

• 20

• 29

• 21

• there is no hypotenuse side

 Find cosA

• 30/16
• 30/34
• 30/15
• 16/34

 FInd tanX

• 32/40
• 40/24
• 32/24
• 24/32

 Find sinA

• 32/40
• 32/24
• 24/40
• 24/32

Which trig function should we use for this triangle?

• sin

• cos

• tan