Question

Please answer fast.... ​

Answer 1

Step-by-step explanation:

$c.)1.0 \\ hope \: its \: help \: you$

Answer 2

Answer:

1

Step-by-step explanation:

cos²26° + cos 64° . sin 26°

= cos²26° + sin ( 90 - 64 )° . sin 26°

= cos²26° + sin 26° . sin 26°

= cos²26° + sin²26°

= 1

Formula's used : -

1. cos θ = sin ( 90 - θ )

2. sin²θ + cos²θ = 1