Trigonometry Right Triangles

What is the ratio for Sine?

• Hypotenuse/Opposite

• Opposite/Hypotenuse

• Opposite/Adjacent

• Adjacent/Opposite

What is the correct equation to solve for x ?

• tan (58) = x/11

• tan (58) = 11/x

• cos (58) = x/11

• sin (58) = x/11

Which side is the long leg in this 30-60-90 triangle?

• 4

• u

• v

Susannah and Natalie, standing 230 m apart on one side of a river, observe a tower on the opposite side. Given that ∠S = 78° and ∠N = 66°, calculate to the nearest metre: the distance ST between Susannah and the tower.

(a)  

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

• sine

• cosine

• tangent

• hypotenuse

The ratio of the length of the side opposite of the angle to the length of the hypotenuse is the _____________

• Sine

• Cosine

• Tangent

What is the correct equation to solve for x ?

• tan( 46 ) = 17/x

• sin ( 46 ) = x/17

• tan (46 ) = x/17

• cos (46) = x/17

If you are given the two sides that are NOT the hypotenuse, which trig function should you use?

• sine

• cosine

• tangent

• cotangent

Find side AB?

• 20 m

• 5 m

• 11.54 m

• 8.66 m

What are x and y in this 30-60-90 triangle?

• x = 6 y = 3√3

• x = 1.5√3 y =1.5

• x = 3√3 y = 6

• x = √3 y = 2√3