annatoncheva11 annatoncheva11

04-05-2020
Mathematics

contestada

Can anyone help me on this task sin75°.cos75°=

Respuesta :

Chelboy Chelboy

04-05-2020

Answer:0.25

Step-by-step explanation:

Sin75.cos75

From trigonometric identity we know that: sin2x=2sinxcosx

sinxcosx=(sin2x) ➗ 2

Sin75cos75=(sin(2x75)) ➗ 2

Sin75cos75=(sin150) ➗ 2 but sin150=0.5

Sin75cos75=0.5 ➗ 2

sin75cos75=0.25

Answer Link

lucasella lucasella

04-05-2020

The answer is attached.

Ver imagen lucasella

Answer Link

Otras preguntas

what is the simplest square root of 1345? no decimals please

What culture believes health is harmony between man and nature?

What is the main religion of Latin america

Fragment in this sentenceWith her heavy dictonary, Donna thumps the top other ancient computer monitor. Whenever the color tint flickers from normal to sickly

the area of a triangle is 41 yards to the second power with a base of 5 yard what is the height in yard

What's a good slogan for a dietitian (have dietitian in it) ?

a soccer team played 160 games and won 65% of them. how many did they win?

What is a series of events that cells go through as they grow and divide

What is the main religion of Latin america

What sorts of signals does the brain use to communicate sensations, thoughts and actions?