if sinA , CosA and tanA are In G.P then Cos

^{3 }A+ cos^{2}A is equal to ?if sinA , CosA and tanA are In G.P then Cos^{3 }A+ cos^{2} A is equal to ?

Tutors, please sign in to answer this question.

Bothell, WA

If sinA, cosA and tanA are consecutive terms of a geometric progression, then:

cos^{2}A = (sinA)(tanA) = sin^{2}A/cosA

so cos^{3}A = sin^{2}A = 1 - cos^{2}A

therefore cos^{2}A + cos^{3}A = 1

Jing X.

IVY-graduate specializing in SAT, ACT, Math and College App

Brooklyn, NY

4.9
(76 ratings)

Timothy R.

Top Mathematics and Physics Tutor | Flexible

Avenel, NJ

4.8
(133 ratings)

Kimberly P.

Get Ready For Next Year With a Principal-Recommended Tutor!

Rego Park, NY

4.8
(28 ratings)

- Math Help 5012
- Algebra 4706
- Math Word Problem 4047
- Calculus 2080
- Word Problem 4832
- Algebra 2 3232
- Algebra 1 3841
- Math Problem 946
- Math Help For College 1337
- Math Equations 929