Ask a New Question

The expression 4 - cos²

Which expression is equivalent to (sin x + 1)(sin x − 1)?A. cos2^x B. -cos2^x C. cos2^x + 1 D. cos^2x − 1 E. -cos^2x + 1
1. 1 answer
2. asked by Chris
3. 512 views
The expression oos² θ/sin θ + sin θ is equivalent to1) 1 + cos² θ 2) cos² θ 3) sin θ 4) csc θ
1. 1 answer
2. asked by Moe
3. 838 views
If S=1/2^2cos1 + 1/cos1¤cos2+1/2^3 cos1 ¤cos2¤cos2^2 + .......... upto 10 terms . If S= sina(cotb-cotc) where a,b,c€N Then
1. 2 answers
2. asked by piyush yadav
3. 1,028 views
if in a triangle ABC m angle A=π/2, then value of cos2 A + cos2 B + cos2 C =?
1. 1 answer
2. asked by Anand
3. 462 views
45) Prove the following identities. Use a separate piece of paper.a) sec x − tan x = 1−sinx cos x b) (csc x − cot x) 2 =
1. 1 answer
2. 94 views
a. Given that sin2 𝑥, cos2 𝑥 𝑎𝑛𝑑 5cos2𝑥 − 3sin2 𝑥 are in arithmetic progression, find the value ofi.
1. 3 answers
2. asked by Benny
3. 157 views
Why does1 - COS2(Squared) _________________ COS2 = tan2
1. 2 answers
2. asked by Joe
3. 525 views
cos²(θ) – 3sin(θ) – sin²(θ)= –2____________________________ I am having a hard time figuring out what to do. Do I use
1. 2 answers
2. asked by sweetiepie
3. 525 views
Rewrite 8 cos2 x as an equivalent expression that does not contain powers of trigonometric functions greater than 1
1. 1 answer
2. asked by Steve
3. 1,106 views
Use fundamental Identities to find the exact value of the expression. Do not use a calculator.Sin² 65° + cos² 65°=??.. How
1. 2 answers
2. asked by Amber
3. 687 views