Prove the Identity $$- \tan ^ { 2 } x + \sec ^ { 2 } x = \sec ^ { 2 } x \cos ^ { 2 } x$$

question 201

Essay

Prove the identity.
- $$- \tan ^ { 2 } x + \sec ^ { 2 } x = \sec ^ { 2 } x \cos ^ { 2 } x$$

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Definitions:

Capital Markets

Markets where savings and investments are channeled between suppliers who have capital and those who are in need of capital.

Money Markets

Sections of the financial market where short-term financial instruments with high liquidity are traded.

Secondary Markets

These are platforms where investors buy and sell securities from other investors, rather than from issuing companies directly.

Capital Markets

Financial markets for buying and selling equity and debt instruments, catering to the long-term funding needs of public and private sector enterprises.