Rewriting the left hand side,
csc²t - cost sec t
= (1/sin²t)-(cost)(1/cost)
= 1/sin²t - 1
= 1/sin²t - sin²t/sin²t
= (1-sin²t)/sin²t
= cos²t/sin²t
= cot²t
Hi there!
If you run into problems like this, remember to "Stay calm and find the common denom." That just means find the common denominator.
13/35 and 2/5 = 13/35 and 14/35
As you can tell, 2/5 is larger.
Hope this helps.
:)
Answer: D) Reflection across the y-axis; 
counterclockwise rotation about the origin
Answer:
a = - 100
Step-by-step explanation:
Given
= - 10
Multiply both sides by 10 to clear the fraction
a = 10 × - 10 = - 100
