Question

Help idk how to do this please ASAP Pythagorean Identify

Answer 1

Explanation:

cos theta = root (1-sin^2theta)

so... cos theta = root (1-root23/12)

simplify and get ur answer

Answer 2

Explanation:

(sin Ф)² + (Cos Ф)² = 1

(√23/12)² + (cos Ф)² = 1

(cos Ф)² = 1 - (√23)²/(12)²

`=1-(23)/(144)\\\\=(144)/(144)-(23)/(144)\\\\=(144-23)/(144)\\\\=(121)/(144)\\\\`

Cos Ф = √(121/144)

Cos Ф = 11/12