nakpodiadivine
nakpodiadivine nakpodiadivine
  • 12-08-2020
  • Mathematics
contestada

21. Which of the following is an identity? a) sin (a) cos (a) = (1/2) sin(2 a) b) sin a + cos a = 1 c) sin(-a) = sin a d) tan a = cos a / sin a

Respuesta :

MathFreak01 MathFreak01
  • 15-08-2020

Answer:

A

Step-by-step explanation:

[tex] \sin(2 \alpha ) = 2 \sin( \alpha ) \cos( \alpha ) [/tex]

[tex] \sin( \alpha ) \cos( \alpha) = \frac{1}{2} \sin( 2\alpha ) [/tex]

Answer Link

Otras preguntas

An electrician leans an extension ladder against the outside wall of a house so that it reaches an electric box 22 feet up. The ladder makes an angle of 77^{\ci
Choose the correct conjugation type for each verb. caminar ( 1st conjunction or 2nd conjunction) correr ( 1st conjunction or 2nd conjunction)
What is the value of x? -5x = 60
The original price is $125. The sale price is $81.25. How much was the discount as a percent?
Explain why the federal government became involved in the farm policy during the 1930s
Conjugate these ER/IR verbs correctly for their subjects/subject pronouns. 1. Tu y yo (beber) jugo de manzana. 2. Carlos (abrir) la ventana. 3. Jada y Dylan (de
. Which is an example of a root? lettuce tomato turnip asparagus
How has history impacted American culture ?
1. What is Pteromerhanophobl the fear of? 2. Who was on Destiny's Childs single “No, No, No”?
Please help i will give brainliest