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Given sin(theta)=4/5 find the cos

Given sin(theta)=4/5 find the cos
asked 19.1k views
9 votes
Given sin(theta)=4/5

find the cos

asked
User Guerrerocarlos
by
8.2k points

1 Answer

2 votes

Answer:

cosx=

3/5

Use Trignometrical identity cosx =
√1−sin2x

cos x =

√1−16/25 =√9/25 = 3/5

to be the value in the first quadranr.

Explanation:

answered
User Matteo Conta
by
9.4k points
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