Trigonometry

sin, cos, or tan ?

x

32m

24

sin, cos, or tan ?

x

35 13

sin, cos, or tan ?

128

x

254

30 sin, cos, or tan ?

x

48

58 sin, cos, or tan ?

x

24

sin, cos, or tan ?

321

x

125

321 sin, cos, or tan ?

x

25

45 31 sin, cos, or tan ?

x

Find the angles marked in each of the following

Find the angles marked in each of the following

Find the length of the side marked

x

Find the length of the side marked

x

Calculate the angle between the brace and the wall.

Calculate the length of BC

2004 EXAM

Find

CD

, the height of

C

above the ground.

Find angle

DAC

, the angle the support wire,

AC

, makes with the level ground.

Find

EG

, the height of the right-hand post.

Find

CF

, the length of the high-wire.

Find the length of the orienteering course.

2005

Find how far the foot of the ladder will be from the wall, i.e. find

SR

.

Calculate the length of bracing that will be required, i.e. find

HC

.

Find the angle the roof makes with the horizontal, i.e. find angle

EHD

.

FG

= 2.8 m.

FK

= 3.03 m.

Find the angle

HKF

.

Calculate the length of the brace,

DJ

.

Calculate the length of ladder if it reaches 3.1 m above level ground, ie find

XA

.

2006

Calculate the distance,

AB

, sailed by Rewa ’ s boat

Calculate the distance,

ED

, that Lee ’ s boat is blown off-course down the pool

Calculate the distance HI

Calculate the size of the angle  JKL

Calculate the distance between R and S.

Calculate the length of the rope (TA).

Bearings and vectors and we are done!