For each arithmetic sequence find d and the missing terms: a) 3, ?, ?, 10.5
1 answer:
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Answer:
see explanation
Step-by-step explanation:
We require to find the third side of the triangle.
Using Pythagoras' identity
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let x represent the third side, then
x² + 15² = 17², that is
x² + 225 = 289 ( subtract 225 from both sides )
x² = 64 ( take the square root of both sides )
x = = 8
Thus
tanΘ = =
cosΘ = =
sinΘ = =
cscΘ = =
=