171.334sin71° = what you wrote at the bottom, you are correct! (162m)
45.583cos71° = what you wrote at the bottom, you are correct! (14.8m)
]]>Bottom left: 171.334m
Bottom Right: 45.583m
Rearranging: hyp = opp/sinθ = 32/sin 56° = 38.60m (nearest cm)
Top-Right
Same again. Look at what you're given. You have the adjacent side this time and you still want to find the hypotenuse. So, you need to use cosθ = adj/hyp
Rearranging: hyp = adj/cosθ = 5.2/cos 23° = 5.65m (nearest cm)
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Try to do the bottom two on your own. They're exactly the same as the top two, just with different lengths and angles.
For future reference, you may also need tanθ = opp/adj, but you don't need that here.
]]>Rubbish drawings I know but I really need help with these 4. CHeers!
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