Trigonometry: Answers to 1dp Trigonometry: Answers to 1dp 1.) 2.) b Sin x = O H Cos x = A H Tan x = O A Trigonometry: Answers to 1dp Sin x = O H Cos x = A H Tan x = O A 1.) 2.) b 1.) 2.) b 7m 7m 40˚ 33˚ 40˚ 33˚ 4cm 4cm a a 3.) 4.) 3.) 4.) d d 6m 6m 35˚ 35˚ 4.3m 51˚ 4.3m 51˚ c c 5.) 6.) 5.) 6.) 2m 2m e 45˚ 67˚ f e 45˚ 67˚ f 4m 4m 7.) 8.) 7.) 8.) h h 4.5m 4.5m 53˚ 53˚ 45˚ 8.9m 45˚ 8.9m g g 9.) 10.) j 9.) 10.) j k k 22˚ 22˚ 7cm 15˚ 15˚ 8.1m 7cm 8.1m 11.) 12.) 11.) 12.) 18cm 27˚ 11m n 18cm 27˚ 11m n 20˚ 20˚ m m

Trigonometry: Answers to 1dp Trigonometry: Answers to 1dp 1.) 2.) 16cm Sin x = O H Cos x = A H Tan x = O A Trigonometry: Answers to 1dp Sin x = O H Cos x = A H Tan x = O A 1.) 2.) 16cm 1.) 2.) 16cm 6m 6m x˚ x˚ 28cm x˚ x˚ 28cm 3cm 3cm 3.) 4.) 3.) 4.) 55m 55m 12m x˚ 12m 28m x˚ x˚ 28m x˚ 7m 7m 5.) 6.) 5.) 6.) 22m 22m x˚ x˚ 18m x˚ x˚ 18m 12cm 14cm 12cm 14cm 7.) 8.) 7.) 8.) 13cm 13cm 46cm 46cm x˚ x˚ 15cm x˚ x˚ 15cm 34cm 34cm 9.) 10.) 39m 9.) 10.) 12m 39m 12m x˚ x˚ 57m x˚ 13m 57m x˚ 13m 11.) 12.) 11.) 12.) 35km 35km x˚ 12m 8m x˚ 12m 8m x˚ x˚ 25km 25km

Which side is coloured Red?  Opposite Adjacent Hypotenuse

Which side is coloured Red?  Opposite Adjacent Hypotenuse

Which side is coloured Red?  Opposite Adjacent Hypotenuse

Which side is coloured Red? Opposite Adjacent Hypotenuse

Which side is coloured Red?  Opposite Adjacent Hypotenuse

7cm  5cm Sin Tan Cos

8cm  5cm Sin Tan Cos

 9cm 6cm Sin Tan Cos

10cm 8cm  Sin Tan Cos

10cm  9cm Sin Tan Cos

10cm  8cm Sin Tan Cos

 10cm 9cm Sin Tan Cos

 9cm 6cm Sin Tan Cos

9cm  6cm Sin Tan Cos

x 32˚ 4 x = 7.7 x˚ 4 7 x = 10.0 4 32˚ x 7 x = 55.2 x˚ 5 x = 6.3 x = 6.4 7 x 65˚

x 32˚ 4 x = 7.7 x˚ 4 7 x = 10.0 4 32˚ x 7 x = 55.2 x˚ 5 x = 6.3 x = 6.4 7 x 65˚

x 65˚ 7 x = 4.7 x = 35.5 4 x˚ 7 47˚ 6 x x = 44.4 x = 34.8 7 x˚ 5 x = 5.6 x 47˚ 6

x 65˚ 7 x = 4.7 x = 35.5 4 x˚ 7 47˚ 6 x x = 44.4 x = 34.8 7 x˚ 5 x = 5.6 x 47˚ 6

A B Cos Sin Which ratio should I use? x 3 23° D C Pythagoras Tan

A B Cos Sin Which ratio should I use? y 21° 6 D C Pythagoras Tan

A B Cos Sin Which ratio should I use? 10 y 6 D C Pythagoras Tan

A B D C 4 x 35 35 x 4 Which triangle is this calculation from? x = 4sin35 x D C 35 4 35 4 x

A B D C 4 3   4 3 Which triangle is this calculation from? Cos  = 0.75 D C 4  x 3 4 3

A B D C x 3   4 4 3 x Which triangle is this calculation from?

Beal is East of Abbot Chesterfield is south of Abbot Beal is 24km from Chesterfield on a bearing of 034°. Find the distance of Beal from Abbot to 2 decimal places. Drawing Calculation Use Sin Sin 34 = x 24 x A B x = 13.42km C 034° 24km

Two towns; Abbot and Beal are 24km apart. The bearing from Abbot to Chesterfield is 180° Chesterfield is 17km from Abbott Find the distance from Chesterfield to Beal to 2 decimal places. Drawing Calculation N 180° A B 24km 90° 17km x C