What is a half-angle identity to find the exact value of sin? Group of answer choices

sin⁡θ=(2-cos⁡2θ)/3

sin⁡θ=(1-cos⁡2θ)/2

sin⁡θ=(1+cos⁡2θ)/2

sin⁡θ=(1-cos⁡2θ)/4

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?