Question

if 1 + cos square theta is equal to 5/4 find the value of theta​

Answer 1

Answer:

60˚

Step-by-step explanation:

1+cos²θ=5/4

1+cos²θ=1+1/4

 cos²θ=1/4

 cosθ=1/2

But, cos60˚=1/2

So, θ=60˚

Answer 2

Step-by-step explanation:

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