citizenofearth
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 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

what is : b squared+14b+ 24 over b squared+5b+6 divided by 1 over b+3
multiply 6/5 x 25/24
what would my final balance be if i put $650 in the bank for 60 months with an interest rate of 6%?
i want an poem on jal hi jivan hai
How does assigning oxidation states in compounds help you balance redox reactions? a. The oxidation state tells you how the bonding electrons are arrayed in an
The goal of sequencing all human DNA base pairs and identifying all human genes belongs to A. restriction enzymes. B. gel electrophoresis. C. the Human Ge
Help me please I don't get it
Which of the following is NOT one of the most important elements when designing a website? •screen resolution •purpose •audience •theme
what device is used to separate light into different colors? (earth science)
The severity of an electrical shock is dependent upon what three things