Simplify the expression: cos(2tan^(-1)x) any

Simplify the expression:cos(2tan^(-1)x) any help is appreciated =D
1. 1 answer
2. asked by Reen
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Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression.2tan 2pi/3 /
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2. asked by tony
3. 688 views
use the fundamental trig. Identities to simplify tan^4x+2tan^2x+1
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2. asked by denise
3. 2,122 views
Genral solution of:2tan x + 3=0 Solve for x if: 2tan x +3 =0 and x E[-180;180]
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2. asked by Thule
3. 661 views
Evaluate each expression without using a calculator.77. cos Tan^-1(-2)) 79. sin (2tan^-1 12/5) 83. sin(2 cos^-1 1/5) 87. cos
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2. 111 views
Which of the following functions of x can be integrated with respect to x without integration by parts, and purely using
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2. asked by Alice
3. 2,306 views
Hello guys.I am just wondering if tan^2 A (tan squared A) = sin^2 A /cos^2A And 2tan A = 2sin A / 2cos A This has been bothering
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2. asked by Jack
3. 552 views
Simplify the expression4a + 2b - 2a + 9 * 8b + 9 6a + 11b 2a + 11b 2a + 2b + 9 Simplify the expression: 10 × 2 × (3 + 4 × 2)
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2. asked by Hummingbird 6th
3. 229 views
Translate the phrase to mathematical language. Then simplify the expression the difference between 119 and -40What is a
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2. asked by sharon
3. 1,361 views
1.Simplify the expression below(-2w^3)^5 / 8w. What is the value of the exponent on "w" ? 2.Simplify the expression (4x^2 - 3x
1. 2 answers
2. asked by Shevani, help me
3. 1,396 views