Question

5 pen price 25 ten pen price____
$cos(a + b) =$
​

Answer 1

$\blue{\textbf{Answer:}}$

→ Ten pen price = 50

____________________

→ cos(A+B) = cosAcosB - sinAsinB

$\blue{\textbf{Explanation:}}$

→ Ten pen price = 2× 25

→ Ten pen price = 50

____________________

cos(A+B) = cosAcosB - sinAsinB

Answer 2

35 is UR answer

Hope its help u

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