Maths-
General
Easy

Question

Find the value of x.

The correct answer is: Hence the value of x=60°


    SOLUTION:
    HINT: Use the property of parallel lines angle rules.
    Complete step by step solution:
    Here we have 2 parallel lines mand land a transversal intersects these parallel
    lines.
    Now we have left parenthesis x plus 40 right parenthesis to the power of ring operator equals straight angle A  (vertically opposite angles)
    Here, straight angle A text  and  end text 80 to the power of ring operator and  forms co-interior angles and they add up to 180 to the power of ring operator
    not stretchy rightwards double arrow straight angle A plus 80 to the power of ring operator equals 180 to the power of ring operator
    not stretchy rightwards double arrow straight angle A equals 180 to the power of ring operator minus 80 to the power of ring operator
    not stretchy rightwards double arrow straight angle A equals 100 to the power of ring operator
    We know that left parenthesis x plus 40 right parenthesis to the power of ring operator equals straight angle A
    text  ie,  end text left parenthesis x plus 40 right parenthesis to the power of ring operator equals 100 to the power of ring operator
    not stretchy rightwards double arrow x equals 60 to the power of ring operator
    Hence the value of x equals 60 to the power of ring operator

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