# a) Use the identity sin x + cos x = 1 to prove that b) Use the identity you proved

## Question:

a) Use the identity sin² x + cos² x = 1 to prove that

b) Use the identity you proved in part (a) to find the minimum values of

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**Related Book For**

## Complete Pure Mathematics 1 For Cambridge International AS & A Level

**ISBN:** 9780198427438

2nd Edition

**Authors:** Jean Linsky, Brian Western, James Nicholson

**Question Details**

Chapter #

**5**Section: Exercises 5.6

Problem: 10

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