7 Answered Questions for the topic Double Angle Formula
Double Angle Formula Trigonometry
02/19/19
If cos(x)=3/5 and x is in quadrant 1, then find exact values for (without solving for x):
A. Sin(2x)B. Cos(2x)C. Tan(2x)
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Double Angle Formula
10/06/18
Trig question
Use an appropriate double angle formula with t = tan(5pi/12) to deduce a quadratic equation of the form t^2 + bt + c = 0, where b and c are real values.
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What is csc2x if tanx = -3/4 and pi/2 < x < pi
The first "<" is a one with a line under it.
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05/02/16
Trigonometry
Find all solutions to the equation in the interval [0,2pi). Enter the solutions in increasing order.
cos 2x = sinx
Double Angle Formula Half Angle Double Angle
01/30/16
show that tan^-1v+cot^-1v=pie/2
can you give me an example of how to solve this step by step
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Double Angle Formula
04/19/15
I'm unsure about this double angle problem
How should I do this problem: find the value of sin 2(theta) if theta is in the 4th quadrant and sin(theta) equals -1/2. I feel like this problem isn't that difficult, but I'm unsure if I did it...
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04/20/14
Sin 2 u , Cos 2 u , Tan 2 u , Sin u/2 , Cos u/2 , Tan u/2
Given that csc u= 17/15 and 0 < u < pi/2 , use double angle or half angle formulas to find the following
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