Question

*जर sec θ = 5/4 असेल तर cos θ = ?*

1️⃣ 5/4
2️⃣ 25/16
3️⃣ 4/5
4️⃣ 16/25​

Answer 1

Given : sec θ = 5/4

To Find :   cos θ

1️⃣ 5/4

2️⃣ 25/16

3️⃣ 4/5

4️⃣ 16/25​

Solution:

sec θ = 5/4

cosθ =  = 1/ sec θ

=> cosθ =    1/  (5/4)

=> cosθ = 4/5

cosθ = 4/5

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