Special Trig Values NEED TO REMEMBER

Question 1

Basics sin 0 cos 0 sin 90 cos 90

Answer 1

Sin 0 = 0, so cos 90= 0
Cos 0 = 1 so sin 90 =1 too

Question 2

Sin 45 cos 45?

Answer 2

These will be the same

Thus sin 45 and cos 45 = root 2/2

Question 3

Sin 30 = cos 60

Answer 3

1/2

Question 4

Sin 60 = cos 30

Answer 4

Root 3 / 2

Question 5

Tan 0 and tan 90

Answer 5

Tan 0 we know is 0
Tan 90 we know is UNDEFINED

Question 6

Tan 30

Answer 6

Root 3 / 3

Question 7

Tan 45

Answer 7

This is 1 as it’s sin / cos which are both same

Question 8

Tan 60

Answer 8

Root 3