Answer:I need help on my question pls help me
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Cosine is a trigonometric function that is represented by adjacent divided by the hypotenuse. The side adjacent to angle A is AC and the hypotenuse is AB, so we can say cos(A) =
. We can do the same for angle B. The side adjacent to it is BC, and the hypotenuse is again AB. So, we can say
cos(B) =
. We are solving for
, so we can substitute the value of those two and solve:
![\frac{\frac{AC}{AB}}{\frac{BC}{AB} }](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7BAC%7D%7BAB%7D%7D%7B%5Cfrac%7BBC%7D%7BAB%7D%20%7D)
![\frac{AC}{AB} * \frac{AB}{BC} = \frac{AC}{BC}](https://tex.z-dn.net/?f=%5Cfrac%7BAC%7D%7BAB%7D%20%2A%20%5Cfrac%7BAB%7D%7BBC%7D%20%3D%20%5Cfrac%7BAC%7D%7BBC%7D)
AC is given to be 3 and BC is also 3, so
is
which is just 1.
Answer:
D=E (Base angle of isosceles triangle are equal)
D+E+F= 180° (sum of angles of a triangle️)
(4x+7)+(4x+7)+(5x+10) = 180
13x = 180- 24
x= 156/13 = 12°
so, E= 4x+7 = 4×12+7 = 55
Hope this helps:)
Yep exponential functions are shown in the answer 2
Answer:
C
Step-by-step explanation:
Since the triangle is right use Pythagoras' identity to solve for x
The square on the hypotenuse is equal to the sum of the squares on the other two sides.
Note the 2 legs are equal, that is both x, hence
x² + x² = 16²
2x² = 256 ( divide both sides by 2 )
x² = 128 ( take the square root of both sides )
x =
=
=
×
= 8![\sqrt{2}](https://tex.z-dn.net/?f=%5Csqrt%7B2%7D)