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