The cosine rule is: \(a^2 = b^2 + c^2 - 2bc \cos{A}\) This version is used to calculate lengths. Calculate the length BC. Give the answer to three significant figures. Use the form \(a^2 = b^2 + c^2 - ...
The three trigonometric ratios can be used to calculate the length of a side in a right-angled triangle. Calculate the length AB. Give the answer to one decimal place. Label the sides of the triangle ...
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