Answer:
Option C, 13.7 cm
Step-by-step explanation:
Cos(31°) =
=> Multiply 15 on both sides of "="
Cos(31°) * 15 = x
13.7 = x
Hope this helps!
The cat is a high speed catamaran auto ferry that operates between city A and city B the cat can make the trip in about 2 and 1/
1 answer:
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Answer:
sec Θ =
Step-by-step explanation:
Using the trigonometric identity
sec²Θ = tan²Θ + 1
Since 270° < Θ < 360° ← that is fourth quadrant, then
sec Θ > 0, thus
sec²Θ = (- )² + 1 =
+ 1 =
, then
sec Θ = =
We have to prove that the tangent is an odd function.
If the tangent is an odd function, the following condition should be satisfied:
From the figure we can see that the tangent can be expressed as:
We can start then from tan(t) and will try to arrive to -tan(-t):
We have arrived to the condition for odd functions, so we have just proved that the tangent function is an odd function.
