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Use a Double- or Half-Angle

Solving Trig Functions: How Do You Solve For Sin 7.5 Using Half-Angle and Double-Angle Identities?
1. 2 answers
2. asked by Spy[c]
3. 716 views
for sin2x+cosx=0, use double-angle or half-angle formula to simplify the equation and then find all solutions of the equation in
1. 2 answers
2. asked by bob
3. 897 views
Use your knowledge of the half-angle and double-angle identities to simplify the following(4sin(2a))-(2sin(2a))(4sin^2(a))
1. 1 answer
2. asked by Addi
3. 525 views
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.Sqrt(1-cos50/2)
1. 1 answer
2. asked by Amanda
3. 627 views
A coil of wire rotating in a magnetic field induces a coltage E=20sin((PIa/4) - (PI/2)). Use an identity to express this in
1. 4 answers
2. asked by Blake
3. 1,264 views
Use the sum, difference, double or half-angle formulas to find the exact value of 𝑡𝑎𝑛(75°).
1. 3 answers
2. asked by h
3. 411 views
simplfy the expression by double angle formula or a half angle formula.cos^2(x/2)-sin^2(x/2) 2sin(x/2)cos(x/2)
1. 0 answers
2. asked by Amanda
3. 593 views
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.�ã((1-cos50)/2)
1. 2 answers
2. asked by John
3. 627 views
I really need help on this questionSimplify the expression by using a Double-Angle formula or a Half-Angle Formula cos^2
1. 1 answer
2. asked by Andrea
3. 705 views
use the appropriate trig identity (sum and difference, half angle, double angle) to find the exact value. 1)cos 255 degrees2)
1. 1 answer
2. asked by Jennifer
3. 855 views