See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 cards from this deck
Heights, mountains, river widths, construction angles
Read carefully, underline key info, identify what to find
Draw right-angled triangle, label all, mark unknown
sinθ=oh\sin \theta = \frac{o}{h}sinθ=ho (opposite/hypotenuse)
cosθ=ah\cos \theta = \frac{a}{h}cosθ=ha (adjacent/hypotenuse)
tanθ=oa\tan \theta = \frac{o}{a}tanθ=ao (opposite/adjacent)
Use trig ratio directly, substitute values and solve
Use inverse trig functions: sin−1\sin^{-1}sin−1, cos−1\cos^{-1}cos−1, tan−1\tan^{-1}tan−1
Ensure answer is reasonable and has correct units
Write answer in words to confirm question answered
Select your subjects, and get access to A+ resources today.