Cofunctions

Find the cofunction of 
csc(25^o)

• sec(25^o)
• sec(65^o)
• csc(65^o)
• sin(25^o)

Find the cofunction of 
sin(42^o)=

• cos(42^o)
• cos(48^o)
• csc(48^o)
• csc(42^o)

Tags

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

Find the cofunction of 
sec(17^o)=

• sin(73^o)
• cos(73^o)
• csc(17^o)
• csc(73^o)

Tags

CCSS.HSG.SRT.C.7

Find the cofunction of cos(15^o)

• sin(75^o)
• sec(75^o)
• csc(75^o)
• cot(75^o)

Tags

CCSS.HSF.TF.A.3

Find the cofunction of cot50°

• tan50°
• cot40°
• tan40°

Find the cofunction of sec10°

• cos80°
• csc80°
• cot80°
• sec80°

Find the cofunction of csc22°

• sec68°
• sin78°
• sin68°
• csc88°

In right triangle ABC, m∠C =90°. If cos B= 5 ⁄ 13, which function also equals 5 ⁄ 13?

• tanA

• tanB

• sinA

• sinB

Tags

CCSS.HSF.TF.C.8

If cos 32° = sinx, find the number of degrees in the measure of acute angle x.

• 32

• 78

• 58

• 68

Tags

CCSS.HSF.TF.B.7

Find the value of R that will make the equation sin73°=cosR true when 0°<R<90°.

• 27

• 17

• 45

• 73

Tags

CCSS.HSF.TF.C.9