SOLUTION: IF 2(cos^2 A - sin^2 A) = 1 A is a positive acute angle), then find the value of Cot A?

SOLUTION: IF 2(cos^2 A - sin^2 A) = 1 A is a positive acute angle), then find the value of Cot A?

Algebra.Com

Question 803176: IF 2(cos^2 A - sin^2 A) = 1
A is a positive acute angle), then find the value of Cot A?

Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
IF 2(cos^2 A - sin^2 A) = 1
A is a positive acute angle), then find the value of Cot A?
***
2(cos^2 A - sin^2 A) = 1
(cos^2 A - sin^2 A) = 1/2
cos2A=1/2
2A=60˚
A=30˚
cotA=cot30˚=√3
RELATED QUESTIONS
If cosec A = 2, Then find value of cot A + (sin A / (1 + cos... (answered by lwsshak3,suds007)

if cos A = 3/5 and angle A is acute find sin 1/2... (answered by lwsshak3)

if A is a positive acute angle and tan A = cot 30 then what is the value of tan... (answered by jim_thompson5910)

Given: A is a positive acute angle and cosA = 4/5. Find the exact value of sin(x +... (answered by stanbon)

Theta = x If x is an acute angle with cos x = 1/9, find the exact value of sin... (answered by Nate,stanbon)

if x is the measure of a positive acute angle and cos x= 7/32 find the value of sin... (answered by jsmallt9)

Can you please help me the problem is: if theta is a positive acute angle and sin2theta=... (answered by jsmallt9)

This is from a worksheet: Sorry my equation editor is not letting me copy and paste the... (answered by Nate)

If cos A = 1/3 , find sin (A/2) if ∠A is ACUTE. (answered by solver91311)