Write the Word or Phrase That Best Completes Each Statement $$\cos \left( x + \frac { \pi } { 2 } \right) = - \sin x$$

question 273

Essay

Write the word or phrase that best completes each statement or answers the question.
Establish the identity.
- $$\cos \left( x + \frac { \pi } { 2 } \right) = - \sin x$$

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Definitions:

Lanolin

A natural grease obtained from sheep's wool, used as a moisturizer in skincare products.

Breastfeed

The act of feeding a baby or young child with milk from a woman's breast, which provides ideal nutrition and supports infant growth and development.

Clinical Breast Exam

A physical examination performed by a healthcare provider to check for breast lumps or other changes, as a method of detecting possible breast cancer.

BRCA Mutation

A genetic alteration in the BRCA1 or BRCA2 genes, which significantly increases the risk of developing breast and ovarian cancers.