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Find a Missing Side Using the Sin Ratio

In this worksheet, students will use the sin rule to find the missing side length of a triangle.

' Find a Missing Side Using the Sin Ratio' worksheet

Key stage:  KS 4

Curriculum topic:  

Curriculum subtopic:  

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Interior angles add up to 180.  Here 107 and 83 add up to 190.

Angle b would be 83 under the rules of alternate angles but doesn't work with angles on a straight line adding up to 180 as for the reasons above.

Angel D would be 52 degrees with angles in a triangle adding up to 180 but is alternate to 107.  Alternate angles are equal.

  • Question 1

Interior angles add up to 180.  Here 107 and 83 add up to 190.

Angle b would be 83 under the rules of alternate angles but doesn't work with angles on a straight line adding up to 180 as for the reasons above.

Angel D would be 52 degrees with angles in a triangle adding up to 180 but is alternate to 107.  Alternate angles are equal.

CORRECT ANSWER
18.93
---- OR ----

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