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AleksAgata [21]
3 years ago
10

Verify the identity. (cos x/ 1+ sin x) + (1+ sin x/cos x) = 2 sec x​

Mathematics
1 answer:
Gekata [30.6K]3 years ago
8 0

Answer:

LHS

\frac{cos x}{1+ sin x} + \frac{1+ sin x}{cos x} \\=\frac{cos2(x)+1+2sin(x)+sin2(x)}{cos(x)(1+sin(x)} \\= \frac{2+2sin(x)}{cos(x)(1+sin(x))} \\\\=\frac{2 (1 + sin(x))}{cos(x)(1+sin(x))} \\= \frac{2}{cos (x)} \\= 2 sec x

= RHS PROVED

hope it helps :)

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