Two interior angles of a triangle measure 56° and 37°. What is the third interior angle of the triangle?
4.

87 degree

Step-by-step explanation:

interior angle is 180

So 56+37 = 93

180-93 = 87

Step-by-step explanation:

we know that the sum of the angles in a triangle = 180 degrees

the third angle will be = 180-(56+37)=87

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2