Question
In Exercises $27-80,$ verify the given identities.$$\frac{1}{1-\sin x}=\sec ^{2} x+\tan x \sec x$$
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In Exercises $27-80,$ verify the given identities. $$(\sec x-\tan x)^{2}=\frac{1-\sin x}{1+\sin x}$$
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In Exercises $27-80,$ verify the given identities. $$\frac{\sec ^{2} x}{1+\sin x}=\frac{\sec ^{2} x-\sec x \tan x}{\cos ^{2} x}$$
In Exercises $27-80,$ verify the given identities. $$\sec x+\tan x=\frac{1+\sin x}{\cos x}$$
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