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lilavasa [31]
3 years ago
15

Verify the identity. 1+tan x/sin x + cos x= sec x

Mathematics
1 answer:
lakkis [162]3 years ago
5 0

Step-by-step explanation:

Taking left hand side:

\frac{1+tan\ x}{sin\ x+cos\ x}\\=\frac{1+\frac{sin\ x}{cos\ x} }{sin\ x+cos\ x}\\=\frac{\frac{cos\ x+sin\ x}{cos\ x} }{sin\ x+cos\ x}\\=\frac{cos\ x+sin\ x}{cos\ x} * \frac{1}{sin\ x+cos\ x}\\=\frac{1}{cos\ x}

1/cos x is equal to sec x.

So,

\frac{1}{cos\ x} = sec\ x

Hence proved ..

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