Answer:
I think the answer is D
Step-by-step explanation:
Answer:
![\bold{sin(38^\circ)=cos(52^\circ)}](https://tex.z-dn.net/?f=%5Cbold%7Bsin%2838%5E%5Ccirc%29%3Dcos%2852%5E%5Ccirc%29%7D)
Step-by-step explanation:
Given that
is a right angled triangle.
![\angle JKL = 52^\circ\\\angle KLJ = 38^\circ](https://tex.z-dn.net/?f=%5Cangle%20JKL%20%3D%2052%5E%5Ccirc%5C%5C%5Cangle%20KLJ%20%3D%2038%5E%5Ccirc)
and
![\angle KJL = 90^\circ](https://tex.z-dn.net/?f=%5Cangle%20KJL%20%3D%2090%5E%5Ccirc)
Kindly refer to the attached image of
in which all the given angles are shown.
To find:
sin(38°) = ?
a) cos(38°)
b) cos(52°)
c) tan(38°)
d) tan(52°)
Solution:
Let us use the trigonometric identities in the given
.
We have to find the value of sin(38°).
We know that sine trigonometric identity is given as:
![sin\theta =\dfrac{Perpendicular}{Hypotenuse}](https://tex.z-dn.net/?f=sin%5Ctheta%20%3D%5Cdfrac%7BPerpendicular%7D%7BHypotenuse%7D)
....... (1)
Now, let us find out the values of trigonometric functions given in options one by one:
![cos\theta =\dfrac{Base}{Hypotenuse}](https://tex.z-dn.net/?f=cos%5Ctheta%20%3D%5Cdfrac%7BBase%7D%7BHypotenuse%7D)
....... (2)
By (1) and (2):
sin(38°)
cos(38°).
...... (3)
Comparing equations (1) and (3):
we get the both are same.
![\therefore \bold{sin(38^\circ)=cos(52^\circ)}](https://tex.z-dn.net/?f=%5Ctherefore%20%5Cbold%7Bsin%2838%5E%5Ccirc%29%3Dcos%2852%5E%5Ccirc%29%7D)
Instead of brainly you could just open your calculator.
10-3.585 = 6.415
Answer:
No, 11/4 is a rational number
In order to find the volume of a triangular pyramid, you must use the formula (abh)/6. Therefore, I believe the answer is 12 (if [a = a] [b = h] and [c = b]).