Question 27
TrigonometryIf tan x = 1, evaluate sin x + cos x, leaving your answer in the surd form.
- A.2√2
- B.½√2
- C.√2
- D.2
Show the answer and explanation
Answer: C (√2)
Explanation
tan x = 1 gives x = 45°, so sin x + cos x = 1/√2 + 1/√2 = 2/√2 = √2.
If tan x = 1, evaluate sin x + cos x, leaving your answer in the surd form.
Answer: C (√2)
tan x = 1 gives x = 45°, so sin x + cos x = 1/√2 + 1/√2 = 2/√2 = √2.