Double angle identity for sine:


Factorize the left side.

Pythagorean identity:


so that

Answer:
y = 4x - 5
Step-by-step explanation:
y = mx + b
By putting above values in equation (i)
-1 = 4 (1) + b
-1 = 4 + b
-5 = b
b = -5
y = 4x - 5
I do not understand ur language I speak English very well sorry I can't help you with your homework
Answer:
12
Step-by-step explanation:
72/6 = 12
Or 72= h*6
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