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trigonometry math

trigonometry math
What is the sum of functions sin 135+cos150? please explain the sum

trigonometry math

trigonometry math

trigonometry math


trigonometry math

trigonometry math

trigonometry math
Given sin x=1/8, what is tan 2x if x is in the interval (pi,3pi/2)?

trigonometry math

trigonometry math



trigonometry math

trigonometry math

trigonometry math



trigonometry math

trigonometry math


trigonometry math
What is cosx if cos2x=1/2 and x is in the interval (90,180)?

trigonometry math


trigonometry math
Find the number of the solutions of equation 99sin^2x101=sin^2x.

trigonometry math



trigonometry math

trigonometry math
I need to find the solution of equation sin^3x*sin3x+cos^3x*cos3x=0

trigonometry math
What is the value of expression cos^2(xy)+cos^2(x+y)cos2x*cos2y?


trigonometry math

trigonometry math

trigonometry math

trigonometry math


trigonometry math
What is the bound between sine of an angle and cosine of double angle ?

trigonometry math

trigonometry math

trigonometry math

trigonometry math

trigonometry math


trigonometry math