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Following the symbols in the image:
Assuming 15cm corresponds to a (the line adjacent to the angle), then you need to use the cosine formula
cos(ø) = a/h
cos(31º) = 15cm/h
h*cos(31º) = (15cm/h) * h
h*cos(31º) = 15cm * 1
h*cos(31º)/cos(31º) = 15cm/cos(31º)
h*1 = 15cm/cos(31º)
h = 16.398
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A right-angled triangle has a hypotenuse of 25cm and one side of 15cm what is the length of the third side?
The length of the third side is 20 cm
What is the missing length of the right triangle which measures 15 cm by 13 cm?
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Using Pythagoras' theorem: 15 times the square root of 2 cm in length
What is length ab if cab is 90 degrees and ac is 9cm and bc is 15cm on right angle triangle?
12 cm
How do you find the length of the hypotenuse if the base is 15cm and the height is 8cm?
Use Pythagoras' Theorem : In a right angled triangle the square of the hypotenuse is equal to the sum of the squares of the other two sides. Let H be the hypotenuse then :- H2 = 152 + 82 = 225 + 64 = 289 Then H = √289 = 17cm
