sitapaudel767
sitapaudel767 sitapaudel767
  • 11-07-2022
  • Mathematics
contestada

sin A - sin B - sin C=-4cos A 2 .sin B 2 .sin C 2​

Respuesta :

Thestudnet Thestudnet
  • 11-07-2022

sinA+sinB+sinC

=2sin(A+B)/2cos(A-B)/2+sin C

=2sin(pi-C)/2cos(A-B)/2+2sin C/2cosC/2

=2cosC/2(cos(A-B)/2+cos(A+B)/2)

=4 cos A/2 cos B/2 cos C/2

= RHS

Answer Link

Otras preguntas

Revising and Editing Directions Read the passage and answer the question that follows. (1) The pressure to get good grades in high school has gotten out of cont
El muchacho está estudian inglés. correct incorrect
What does working in cooperation mean?
A class consists of 55% boys and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35% of the class are girls and scored
The horizontal component of force acting at an angle of 30 degree with the horizontal is 100N.Find the magnitude of the force and its vertical component.
If the force applied to an object is not greater than the starting friction, what will happen to the object? Which answer is correct ? 1. The object will begin
Find the sum (4s/ s2-2s+1)+(7/s2+2s-3)
Six more than the quotient of four and a number xxx.
what was the first English colony in America​
REVUS 1 Next © Earth and Space Systems: Mastery Test Submit Test Tools Info Select the correct answer Ganymede is one of the many moons of Jupiter it is nearly