Everything Maths Grade 10

a) tan 80 ◦ b)cos 73 ◦

c) sin 17 ◦ d)tan 313 ◦

e) cos 138 ◦ f)sec 56 ◦

g) cot 18 ◦ h) cosec 37 ◦

i)sec 257 ◦ j)sec 304 ◦

k) 3 sin 51 ◦ l) 4 cot 54 ◦+ 5tan 44 ◦

m)

cos 205 ◦

4

n)

p

sin 99 ◦

o)

p

cos 687 ◦+sin 120 ◦ p)

tan 70 ◦

cosec 1 ◦

q)sec 84 ◦+ 4sin0,4◦ 50 cos 50 ◦ r)

cos 40 ◦

sin 35 ◦

+tan 38 ◦

3.Use the triangle below to complete the following:

60 ◦

30 ◦

2

p

3

1

a) sin 60 °= b)cos 60 °= c) tan 60 °=

d)sin 30 °= e)cos 30 °= f) tan 30 °=

4.Use the triangle below to complete the following:

45 ◦

45 ◦

p

2 1

1

a) sin 45 °= b)cos 45 °= c) tan 45 °=

5.Evaluate the following without using a calculator. Select the closest answer from the list provided.

a)sin 60 ◦tan 60 ◦

0

1

2

2

p

3

p

3

2

2

p

3

b)tan 30 ◦cos 30 ◦

0

1

2

p

3

p

3

2

2

p

3

p

3

2

Chapter 5. Trigonometry 139