citizenofearth citizenofearth

22-03-2020
Mathematics

contestada

In the following questions, simplify the given formulae:

2.sin50°cos 40° - cos50°sin 40°

3.cos75°cos 15° - sin75°sin 15°

Respuesta :

Wallind11 Wallind11

22-03-2020

Step-by-step explanation:

sin(A − B) = sin A cos B − cos A sin B

sin50°cos 40° - cos50°sin 40°

= sin(50-40)°

=sin10°

cos(A + B) = cos A cos B − sin A sin B

cos75°cos 15° - sin75°sin 15°

= cos(75+15)° = cos90° = 0

Answer Link

Otras preguntas

How did americans react to the miltary-industrial complex?

During the early twentieth century, the nation's century-long isolation from european conflicts increased. a. True b. False

What effect does the water temperature have on solution rate hypothesis?

Two mice are heterozygous for albinism (aa) . the dominant allele (a) codes for normal pigmentation, and the recessive allele (a) codes for no pigmentation. wha

Virginia has a favorable attitude toward aerobics and working out. just the thought of her daily workout is enough to make virginia feel good, and she finds tha

The sum of digits in a two-digit number is 14. If you double the reversed number and add the result to the original number, the sum would be 222. Find the origi

Ivan has 4 hours of Music on his MP3 player Jazz makes up 1/6 of the total time how many hours of jazz are on Ivan's MP3 player show your work

The area of a square is 144 in². What is the length of the square in feet?

Tax that you pay when making a profit from selling a house is an example of

In which city was Harlem located? Detroit Chicago New York Philadelphia