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

why is the gateway arch important

African elephants flap their large ears to cool off. Which biology theme does this phenomenon represent?

Which of the following cannot be replaced by the Internet? A. Public libraries B. Shopping malls C. The shipping industry D. Colleges and universiti

Could they have ended slavery without a war?

As industrialization spread to the United States which area developed the big industries

Stacy is walking his dog on a path and his dog wiggled out of his collar. If the dog is 30 feet lower than the owner and the angle of elevation from the dog to

Is 13 / 4 the same as 31 / 4 ? Explain your answer.

what is the numerical coefficient term for -3m^2

Subtract the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending powers of a. Subtract: 11a2 + 42a -

Charger Company's most recent balance sheet reports total assets of $31,347,000, total liabilities of $18,447,000 and total equity of $12,900,000. The debt to e