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If sin2A=24/25 and sinA=4/5 then find the value of cosA​
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If sin2A=24/25 and sinA=4/5 then find the value of cosA​

User Patrick Mlr
by
8.5k points

1 Answer

5 votes

Answer:

cosA = 3/5

Step-by-step explanation:

sin2A = 2sinAcosA

Plug in our values:

24/25 = 2 * 4/5 * cosA

24/25 = 8/5 * cosA

cosA = 3/5

User Olajumoke
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