Starting with the Identity $\sin ^ { 2 } x + \cos ^ { 2 } x = 1$

question 21

Essay

Starting with the identity $\sin ^ { 2 } x + \cos ^ { 2 } x = 1$ and then dividing both sides of the equation by a suitable trigonometric function, derive the trigonometric identity.
​ $\sec ^ { 2 } x = 1 + \tan ^ { 2 } x$

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A third party who benefits from a contract between two other parties, especially in cases where the contract is intended as a gift to the third party.

Second-party Beneficiary

A person or group that benefits from a contract, despite not being a direct party to that contract.

Anti-assignment Clause

A provision in a contract that prohibits the transfer of rights or delegation of duties by a party to the agreement without prior consent from the other party.

Debris

Dispersed pieces, usually from something that has been demolished or ruined.