27 Answered Questions for the topic Trigonometric formulas
Solve cos x = -2/3 for 0 ≤ x < 2π (round to the nearest hundredth of a radian).
Solve sin x =√2/2 for 0 ≤ x < 2π (round to the nearest hundredth of a radian).
I need the solutions over the interval [0 degrees, 360 degrees) 9 sin^2 θ tanθ-9 sin^2 θ=0
how do I simplify these trig expressions?
Can't Solve -1-√3 * 1-√3 ------- ------ 1+√3 * 1-√3
Determine A, B and C so that the formula (cosx−5sinx)^2 = A cos2x + B sin2x + C is valid for all values on x. A, B och C are integers.
Simple Trig, got lost and need help.
Find tan(2 Theta +pi) using the picture:
Find the angle x such that 0 is less than or equal to x which is less that 2pi. cos(2x)= =2-2sin^2x
HELP!! given sin(x)= -3/5, pi<x<3pi/2; cos(y)= 12/13, 3pi<y<2pi find exact value of:
Use sum, difference, product, sum to product, product to sum or half angle formulas to find the exact value of each expression.
cotx=-sqrt3, cosx<0, tan(x-pi/6)
Use the sum/difference formula to find the exact answer.
Sonic boom trig question
verify that: cos^3(x)+sin^3(x)=1/2* (cos(x)+sin(x))*(2-sin(2x))
Cos/1+sin + 1+sin/cos = 2sec
cos 3x = -cos 3x
At the the year t=0 population of 5900 began growing at a rate of 4% per year.
Use the half angle formulas to determine.