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

Fill in the blanks with the correct form of the present tense conjugations. 1. Yo _____ enojada. 2. Tú ______ feliz. 3. Ellas______enfermas. 4. Nosotros______sa

The population of Town A grew approximately

Table sugar is an example of which molecule

.............................................................................

An online retailer sells five products whose retail prices are as follows: product 1, $2.98; product 2, $4.50; product 3, $9.98; product 4, $4.49 and product 5

what is the major river that flows north and east in India

PLZ HURRY The group from the circular flow model that use the factors of production to produce goods and services and sell them in exchange for money in the pro

You have been expelled from home by tour father for a misdeed. Write a letter to your fathers friend explaing what happened and asking him or her to go and plea

Longitudinal waves are produced by

The volume of a ball, V cm", is directly proportional to the cube of its radius, r. When r = 7.5. V = 562.54 cm (a) Find the equation connecting V and r. Give t