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Simplify: (sin²θ/cos θ) + (cos²θ/cos θ)
Question

Simplify: (sin²θ/cos θ) + (cos²θ/cos θ)

A.

cot θ

B.

sec θ

C.

tan θ

D.

cosec θ

Correct option is B

Given:

The expression is sin2θcosθ+cos2θcosθ\frac{\sin^2 \theta}{\cos \theta} + \frac{\cos^2 \theta}{\cos \theta}​​

Formula Used:
Using the identity sin2θ+cos2θ=1\sin^2 \theta + \cos^2 \theta = 1​​

Solution:
Combine the terms over the common denominator cosθ\cos \theta​ :

sin2θcosθ+cos2θcosθ=sin2θ+cos2θcosθ\frac{\sin^2 \theta}{\cos \theta} + \frac{\cos^2 \theta}{\cos \theta} = \frac{\sin^2 \theta + \cos^2 \theta}{\cos \theta}​​

Substitute sin2θ+cos2θ=1 \sin^2 \theta + \cos^2 \theta = 1 ​​

1cosθ\frac{1}{\cos \theta}​​

secθ\sec \theta​​

Therefore, the simplified expression is secθ\sec \theta​ .

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