ikuzmenko101
ikuzmenko101 ikuzmenko101
  • 02-12-2021
  • Mathematics
contestada

Simplify the expression using trigonometric identities: sec (–θ) – cos θ.

Respuesta :

Аноним Аноним
  • 15-12-2021

Answer:

sin θ . tan θ

Step-by-step explanation:

Note : -

sec ( - θ ) = sec θ

Formula / Identity : -

sec θ = 1 / cos θ

sec ( - θ ) - cos θ

= [ 1 / cos θ ] - cos θ

{ LCM = cos θ }

= [ 1 / cos θ ] - [ cos²θ / cos θ ]

= [ 1 - cos²θ ] / cos θ

{ 1 - cos²θ = sin²θ }

= sin²θ / cos θ

{ sin²θ = sin θ . sin θ }

= sin θ . sin θ / cos θ

{ sin θ / cos θ = tan θ }

= sin θ . tan θ

Hence, simplified.

Answer Link

Otras preguntas

In one year New York received 62.51 inches of rain.In November the city received 25% of rainfall. About how much rain did New York receive in November
Using the slope intercept form of a line find the equation of a line with a slope of 4/3 in a Y intercept of negative one. Then graph the line on the grid prov
Radiation is an example of a transverse wave t or f
describe the united states movement from isolationism to expansion-midnedness in the final decades of the 19th century the late 1800's
what percent of 80 is 28
How do I multiply whole fractions
Pls helps fast!! The figure shows two parallel lines AB and DE cut by the transversals AE and BD: Which statement best explains the relationship between Trian
What is the distance between-13 and 13 on a number line
can u guys help me out with 6th us question
please help! Which of these statements is true about chemical reaction rates? The reaction rates can change. The reaction rates cannot increase. The reaction r