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Trigonometry Functions
供稿人: Crouch

A

5
sinx = opp/hyp
4
3
sinA=

A

5
4
sinx = opp/hyp
3
B
sinB=

A

5
4
cosx = adj/hyp
3
B
cosB=

A

5
4
tanx = opp/adj
3
B
tanA=
sin30 =

0.7

0.5

0.6

tan70 =

0.7475

2.7475

2.6482

0.8432

Round your answers to the nearest degrees.
sinx= 0.2525       
x=
degrees
Round your answers to the nearest degrees.
sinx= 0.7896       
x=
degrees
Round your answers to the nearest degrees.
cosx= 0.6      
x=
degrees
Round your answers to the nearest degrees.
cosx= 0.8972       
x=
degrees
Round your answers to the nearest degrees.
tanx= 1      
x=
degrees
Round your answers to the nearest degrees.
tanx= 0.5     
x=
degrees

The formula for

 sinx of is

adj/hyp

opp/hyp 

opp/adj

sin 45=

0.8072

0.9321

0.7071

0.7731

tan 29=

0.3215

0.5843

0.7584

0.5543

The formula for

 cosx of is

adj/hyp

opp/hyp 

opp/adj

The formula for

 secΘ of is

adj/hyp

hyp/adj

opp/adj

B
C
Round to nearest degree.
4
10

A

Find m<A

10
B
C
Round to nearest degree.
4

A

Find m<A

B
C
Round to nearest tenth.

15

32∘

A

Find AB.

Find the angle of elevation to the peak of a

mountain for an observer who is 155m

from the mountain if the observer's eye

is 1.5m above the ground and the mountain

is 350m tall.

Round to the nearest degree.

Due to a storm, a pilot flying at an altitude

of 528ft has to land early.  If he had a

horizontal distance of 2000ft to land,

at what angle of depression should he land?

Round to the nearest degree.
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