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

Which statement best completes the diagram of the ways the different branches of government can limit one another's power? Can rule a president's actions uncons

Wisseman Corporation is a shipping container refurbishment company that measures its output by the number of containers refurbished. The company has provided th

P is the midpoint of HR. Given HP = 7x + 2 and PR = 58; find the value of x

PSYCHOLOGY. Which of the following statements does not describe a limitation of statistics? A. Statistics addresses gaps in knowledge. B. Statistics can allow f

can someone help me with my english homework

All of the cases which have been decided by U.S. judges, as well as by English judges prior to the American Revolution, constitute a body of law known as: a)

Ambrose is discussing his college major with his best friend. Ambrose says that his parents want him to be a certified public accountant (CPA) just like them wh

Twenty different statistics students are randomly selected. For each of them, their body temperature (degrees°C) is measured and their head circumference (cm

Question 1(Multiple Choice Worth 3 points) (03.04 MC) Which part of the water cycle would follow step C in the diagram shown? A diagram of the water cycle. Poi

solve the equation for x. Round your answer to the nearest hundredth 8(x-7)=454