Unit 9 Test Review

Set up the problem so that you can solve for X.

• sin X = 41/28

• tan X = 41/28

• cos X = 28/41

• sin X = 28/41

sin A = ​​ (a)   ​

cos A = ​​ (b)  

tan A = ​ (c)  

Tags

CCSS.MATH.CONTENT.HSG.SRT.C.8

What is the Pythagorean Theorem?

• a + b = c²

• a² = b² + c

• a² + b = c

• a² + b² = c²

How can we solve for angles in a right triangle given information about 2 sides.?

• By using the Pythagorean Theorem

• By using trigonometric ratios such as sine, cosine, and tangent.

• Solving for an angle using lengths of sides is not possible.

  We can only find an angle if we are given information about the other 2 angles. We then subtract their sum from 180 to find this angle.

Find the length of the missing side. 

• 17 cm
• 22 cm
• 15 cm
• 13 cm

What is the longest side of a right triangle?

• Altitude

• Hypotenuse
• Long Side
• Short side

What is the opposite side to <E?

• EF

• DF

• DE

What would you use to solve for x?

• Pythagorean Theorem
• Trig
• Inverse Trig

Which equation would be used to solve for x?

• 34²+19²=x²
• sin(34)= 19/x
• cos(34)= 19/x
• cos^-1(19/34)

Which equation would be used to solve for x?

• x²+9²=13²
• sin^-1(13/9)
• sin(13)= 9/x
• sin^-1(9/13)