JAMB Mathematics 2023 Objective — Question 32
Question 32 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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If tan x=1, evaluate sin x + cos x in surd form.
- A. 2√2
- B. √2Correct
- C. 1/2√2
- D. 2
Explanation
tanx=1 ⇒ x=45°. sin45°+cos45°=1/√2+1/√2=√2.
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