Trigonometric Functions

The ratio in a right triangle of adjacent to hypotenuse is _____

• sine

• cosine

• tangent

• inverse cosine

Find the length of side w.

• 21.4 cm

• 18.0 cm

• 36.5 cm

• 43.6 cm

What is the ratio for Sine?

• Hyp/Opp

• Opp/Hyp

• Opp/Adj

• Adj/Opp

Sin is related to ​ (a)   , cos is related to ​ (b)   , and tangent is related to ​ (c)  

• Csc

• sec

• cotangent

What does "cosecant" represent in trigonometry?

• The ratio of the length of the side opposite to an acute angle to the length of the hypotenuse.

• The length of the hypotenuse divided by the length of the side opposite the angle.

• The length of the side adjacent to an acute angle divided by the length of the hypotenuse.

• The ratio of the length of the hypotenuse to the length of the side opposite the angle.

Answer explanation

The cosecant in trigonometry represents the length of the hypotenuse divided by the length of the side opposite the angle.

Say 'TRUE' or 'FALSE'
The values of cosec θ and sec θ cannot be smaller than 1

• TRUE

• FALSE

For y=7sin(6(x-8))+9, What is the value of A, B , C, and D?

• 8

• D, midline

• 9

• A, amplitude

• 7

• C, phase shift

• 6

• B, helps calculate period

F(x) = Asin[B(x-C)] + D is the standard form. A is the Amplitude B helps you find the period, B=2pi/period C is the phase shift D is the vertical shift Then f(x) = 2Sin(3x + 1) + 4

• 4

• D, vertical shift

• 3

• B, helps calculate period

• 1

• C, phase shift

• 2

• A, amplitude