Applications Combining the Sine Law and Cosine Law
10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.
Sample: the first question, solved
A triangle gives you two sides and the INCLUDED angle between them (SAS). Which law do you use first to find the third side?
📘 Worked solution
✓SAS is exactly what the cosine law is built to solve — you don't yet have a matched angle-side pair for the sine law.
And one from the hard end
"A triangular field has sides 30m and 40m with an included angle of 65°. Find the third side, then one other angle."
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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