Answer:
g = 30
Step-by-step explanation:
Plus with minus inside brackets give us minus
70.6179 and something something i think but am more than happy to answer
1+sin²x=2-cos²x
Remenber: sin²x+cos²x=1 ⇒sin²x=1-cos²x
1+sin²x=1+(1-cos²x)=2-cos² x (this is true)