girinamisha girinamisha

13-03-2020
Mathematics

contestada

If tan²A = 1+ 2tan²B
Show: COS2B = 1+2 cos2A

Respuesta :

ghanami ghanami

13-03-2020

Answer:

Step-by-step explanation:

hello :

here is this idea :

tanA= sinA/cosA tanB= sinB/cosB

cos²A+sin²A =1 cos²B+sin²B =1

cos²A-sin²A=cos2A cos²B-sin²B=cos2B

Answer Link

Otras preguntas

Which of the following is true? Multiple Choice A Nash equilibrium is always a subgame perfect equilibrium. A subgame perfect equilibrium is always a Nash equil

Divide. Give the quotient and the remainder. 437/7

How do you handle sensitive information or records?.........

Find the volume of the cylinder.

Write the equation in function form. Show your steps. 2x-3y=0

The trend of declining ecosystem resource availability and increasing demand for these resources can best be countered by _______. a. increasing the supply of e

decide if the following sentence is grammatically correct or incorrect. no me digas eso.

Tarascan culture by diego rivera. dye workers and codice writers create a codice in front of the chief holding a long paper. what were the artist’s two major in

Aeronautical researchers have developed three different processes to pack a parachute. They want to compare the different processes in terms of time to deploy a

Which of the following groups helped fugitivs use the under ground railroad during the mid1800s