rainforest321 rainforest321

23-12-2016
Mathematics

contestada

prove sin^2 theta-sin^2 theta is sin tetha sin 3 theta

how to prove..pls help!! thanksss

prove sin2 thetasin2 theta is sin tetha sin 3 thetahow to provepls help thanksss class=

Respuesta :

evreddy324 evreddy324

23-12-2016

Simply you can substitute theta=45 degrees (or any angle,not zero) in left hand side and right hand side.

or

using a^2 - b^2 =(a+b)(a-b)

= sin(2x+x)sin(2x-x)
= sin 3x sin x

Answer Link

Otras preguntas

1)Pong paid $20.40 in interest on her credit card last month. The monthly interest rate for her credit card is 1.7% of the balance she owes. What was Pong’s bal

Please help me answer this question

Kyle bought a 5 pound pumpkin for $2.60. how much did he pay per pound

Factor completely 2x^3 + 22x^2 + 36x

change 2.36 to a mixed number and reduced to lowest terms

The temperature for the past 8 hours has been changing at the rate of-1.5 degrees each hour. The meteorologist predicts that the temperature will continue chang

4. For each function, write the rule in vertex form and find the coordinates of the max/min point on its graph. a) f(x)=x^2+12x+11 b) g(x)=x^2-4x+7 c) h(x)=x^2-

i saved $360 for one year.the bank paid me 20% interest.how much do i now have

what are the natural resources found in north america

Jose traveled to the town hall and back. The trip there took five hours and the trip back took four hours. He averaged 35 km/h on the return trip. Find the aver