# Maths C4 Trig formulae (OCR MEI)

### Description

Quiz to test the required trig formulae for C4, designed with OCR MEI spec in mind, but probably useful for others
Quiz by Zacchaeus Snape, updated more than 1 year ago
 Created by Zacchaeus Snape almost 10 years ago
1682
45

## Resource summary

### Question 1

Question
Write cos2x in terms of sinx
• 1+ 2sin²x
• 1-2sin²x
• 1+sin²x
• 1-sin²x

### Question 2

Question
Write cos2x in terms of cosx
• 2cos²x + 1
• cos²x -1
• 2cos²x - 1
• cos²x + 1

### Question 3

Question
Write sin²x in terms of cos2x
• ½(1 + cos2x)
• ½(1 - cos2x)
• ½cos2x
• 1 - cos2x

### Question 4

Question
Write cos²x in terms of cos2x
• ½(cos2x + 1)
• ½(cos2x - 1)
• cos2x -1
• cos2x + 1

### Question 5

Question
Write cos²x in terms of cos2x
• ½(cos2x + 1)
• ½(cos2x - 1)
• cos2x -1
• cos2x + 1

### Question 6

Question
Express cos2x in terms of sinx and cosx
• cos²x - sin²x
• cos²x + sin²x
• sin²x - cos²x
• 2cos²x - sin²x

### Question 7

Question
Express sin2x in terms of sinx and cosx
• 2sinxcosx
• 2sinx + cosx
• 2cosx + sinx
• 2(sinx + cosx)

Question
secx =
• 1/cosx
• 1/sinx
• 1/tanx

Question
cosecx =
• 1/sinx
• 1/cosx
• 1/tanx

Question
cotx =
• 1/tanx
• 1/cosx
• 1/sinx

### Question 11

Question
What is the small angle approximation for sinθ?
• θ
• 1 - θ
• 1 - 2θ

### Question 12

Question
What is the small angle approximation for cosθ?
• 1 - θ²/2
• 1 - θ²
• θ
• θ²

### Question 13

Question
What is the small angle approximation for tanθ?
• θ²
• θ
• 1 + θ
• θ - 1

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