anthonyyazzie349 anthonyyazzie349

04-04-2022
Mathematics

contestada

ASAP Please i need this done in the next 20 minutes

cos^2B-sin^2B=3cosB+1

Respuesta :

drakepuig drakepuig

04-04-2022

the answer is "Using the trigonometric identity

sin²x + cos²x = 1 , then sin²x = 1 - cos²x

Consider the left side

sin²a - sin²b

= (1 - cos²a) - (1 - cos²b)

= 1 - cos²a - 1 + cos²b

= cos²b - cos²a

= right side , thus verified"

Answer Link

Otras preguntas

Because of the West’s natural resources, two important economic activities in the region are _____.

On Monday, a box office sells 140 tickets for the upcoming concert. On Tuesday, they sell an additional 100 tickets. After Tuesday’s sales, the concert is now 3

which statement best describes the theme of The World by Christina Rossetti

match the following actions with the system in which government performs them.

Personality traits such as thoughtfulness, empathy, self-control, and goal orientation belong to the _____ category. openness conscientiousness extraversion neu

I don't know how to do this.

What can radiometric dating reveal A.the absolute age of a fossil B. The transitional age of a fossil C. The relative age of a fossil D. The average age of

Name given to the money that had to be paid by Germany

Triangle ABC is an isosceles right triangle. What is the measure of a base angle? °

PLS ANSWER QUICK!!! Which of the following does NOT describe the purpose and practice of selling stocks? Companies often raise money for operations or particula