Remember that all the interior angles of a triangle add up to 180°.
The picture tells us two of the angles,
which is 40° and
which is also 40°.
Subtract the measurement of these two angles from 180° to find the measure of the third angle,
:
180° - 40° - 40° = 100°.
The measure of angle RST is 100°.
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Answer: 100°
Answer:
B and D
Step-by-step explanation:
Answer:
Graphs..?
Step-by-step explanation:
Answer:
x = 3
Explanation:
Let's first start with the front triangle.
This one is an isosceles right-angled triangle. This means that it has special side lengths of: s , s and s√2 with s√2 being the hypotenuse.
Since we have the hypotenuse = 6√2 units
Therefore, each of the other two sides would be of length = 6 units
Now, let's consider the side triangle.
This one is also a right-angled triangle. This means that special trigonometric functions can be applied.
These functions are:
sin (θ) = opposite / hypotenuse
cos (θ) = adjacent / hypotenuse
tan (θ) = opposite / adjacent
Now, we have:
θ = 60°
adjacent side = x
hypotenuse = 6 units (calculated from the previous step)
Substitute with the givens in the cos function to get the value of x as follows:
cos (60) = x / 6
x = 6 * cos(60)
x = 3 units
Hope this helps :)
