1 . Rewrite as a single trig function, then evaluate: 18sin157.5∘cos157.5∘ 2. Use a half angle identity to evaluate.

tan(3π8)

3. Use a sum or difference identity to evaluate.

sin15∘

4. Given: cotA=−247 , where cosA>0 and

cosB=35 where 0

Evaluate:

a) cos2A

b) sinB2

o= 4(i) +3

step-by-step explanation:

o is your output value and i is your input value. so, for example, if we stuck 7 in as our input, we would first multiply by 4 ( pemdas ), which equals 28. then we would add 3 to 28, for a total output of 31. this may not be a graph, but, it is a way to solve your formula..

step-by-step explanation:

hope this !

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊