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

What is the molarity of 500 ml of a solution containing 85.0g AgNO3? A) 0.5 M B) 1.0 M C) 2.0 M D) 5.0 M

Write the equation of a line in slope intercept form that has a slope of 6 and has a y-intercept of ½.

Can someone help me on number 4??

Read the scenario about a formal discussion. Mrs. Park’s biology class is discussing the components of healthy garden soil. One student mentions that her commun

help please I need to turn this in tomorrow thank you

Marking as Brainliest.

Why did Congress take over Reconstruction?

Many historical references are found in this speech. In the quote to the left, Bryan compares the fight over the Gold Standard to: a family squabble. the Ame

Why did European countries establish colonies in Africa during the 19 century?

by the late 1880s, U.S. businessmen saw Latin America as a place where A. their goods were not welcome. B. they could expand trade and investments. c. they cou