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Software-Engineering
October 11, 2023
Data-Interpretation
October 11, 2023
Software-Engineering
October 11, 2023
Data-Interpretation
October 11, 2023

GATE 2020

Question 1

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 ______.

A
60°
B
120°
C
180°
D
90°
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
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

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