Exam-Style Question on Trigonometry
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 361. This question is similar to one that appeared on an IB Standard paper in 2018. The use of a calculator is allowed.
The diagram, not drawn to scale, shows a quadrilateral ABCD.
AB = 7.5cm, BC = 3.6cm, angle DAB = 98o, angle DBA = 49o and angle DBC = 80o
(a) Find DB
(b) Find DC
(c) The area of triangle ABD
The worked solutions to these exam-style questions are only available to those who have a Transum Subscription.
Subscribers can drag down the panel to reveal the solution line by line. This is a very helpful strategy for the student who does not know how to do the question but given a clue, a peep at the beginnings of a method, they may be able to make progress themselves.
This could be a great resource for a teacher using a projector or for a parent helping their child work through the solution to this question. The worked solutions also contain screen shots (where needed) of the step by step calculator procedures.
A subscription also opens up the answers to all of the other online exercises, puzzles and lesson starters on Transum Mathematics and provides an ad-free browsing experience.
Drag this panel down to reveal the solution
If you need more practice try the self-checking interactive exercises called Advanced Trigonometry.
©1997 - 2019 Transum Mathematics :: For more exam-style questions and worked solutions go to Transum.org/Maths/Exam/