29-07-2014
Mathematics

Answered

prove that[tex]sin 5x+sin3x/cos5x+cos3x=tan4x[/tex]

Answer :

29-07-2014

sin5x + sin3x = 2sin4x.cosx
cos5x + cos3x = 2cos4x.cosx
so [tex] \frac{2sin4x.cosx}{2cos4x.cosx} [/tex] = [tex] \frac{sin4x}{cos4x} [/tex]
= tan4x

Answer Link

Other Questions

What times what equals 59

Which quadrilaterals have two pairs of opposite sides that are parallel and have no right angles? Choose all answers that are correct. A.parallelogram B.trapez

What feature of alveoli adapts them to efficient gas exchange? A. They have muscles which pump air in and out regularly. B. Their membranes are more permeable t

Which political party is Andrew Jackson usually associated with? please help!

Pan-Arab nationalism is growing a movement primary centered in: the Caribbean Southeast Asia sub-Saharan Africa the Middle East

rhada has a 5-pound bag of clay. Her cráft proyecto requires 5 ounces of clay for each batch of 6 ornaments. If she uses all of the clay how many ornaments can

A table tennis club has 180 members 117 of them are adults and the rest are children what percentage of the clubs members are adults??

In a 3-minute period, 33 waves crash on the shore. How many waves will crash on the shore in 10 minutes?

true or false: the earths mantle lies directly below the inner core

difference between great compromise and 3/5 compromise