Software-Engineering
October 11, 2023Data-Interpretation
October 11, 2023GATE 2020
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Question 1
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Two straight lines are drawn perpendicular to each other in X-Y plane. If α and β are the acute angles the straight lines make with the X-axis, then α+β is ______.
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60°
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120°
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180°
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90°
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Question 1 Explanation:
Two st. line perpendicular to each other in X-Y, if α & β are acute angles then α + β = ____
We know a + α + β = 180
α + β = 180 – 90
α + β = 90
We know a + α + β = 180
α + β = 180 – 90
α + β = 90
Correct Answer: D
Question 1 Explanation:
Two st. line perpendicular to each other in X-Y, if α & β are acute angles then α + β = ____
We know a + α + β = 180
α + β = 180 – 90
α + β = 90
We know a + α + β = 180
α + β = 180 – 90
α + β = 90