Question

sin (450+ q) – cos (450 – q) is equal to

Answer 1

Answer:

0

Expklanation:     Sin (450+ q) – cos (450 – q)

We know that,

sin(a+b)= sinAcosB+CosA sinB

sin(450 + q) = sin450 cosq + cos450 sinq

                   = 1*q 2

and

cos (a - b) =cosAcosB + sinAainB

                = 0 + sin450* q

               = 0 + 1*q = q

Now, q - q = 0

That's the final answer

I hope it will help you.

Answer 2

0

Explanation:     Sin (450+ q) – cos (450 – q)

We know that,

sin(a+b)= sinAcosB+CosA sinB

sin(450 + q) = sin450 cosq + cos450 sinq

                   = 1*q 2

and

cos (a - b) =cosAcosB + sinAainB

                = 0 + sin450* q

               = 0 + 1*q = q

Now, q - q = 0