Question

sin(45⁰ + ∅) - cos (45⁰-∅) is equal to ? (answer 0 how)​

Answer 1

•||Solution||•

$→\;\bold{ \sin45 \cos\theta + \cos45 \sin\theta - \cos45 \cos\theta - \sin45 \sin\theta } \\ →\;\bold{\frac{1}{ \sqrt{2} } ( \cos\theta + \sin\theta - \cos\theta - \sin\theta )} \\ →\;\bold{ \frac{1}{ \sqrt{2} } (0)} \\ →\;0$

→ sin(A+B) = sinA.cosB+cosA.sinB

→ cos(A+B) = cosA.cosB-sinA.sinB

$\boxed{\tt{@MrMonarque}}$

Hope It Helps You ✌️

Answer 2

Step-by-step explanation:

sin(45o+θ)−cos(45o−θ)

⇒sin5ocosθ+cos45osinθ−cos45ocosθ−sin45osinθ

=21(cosθ+sinθ−cosθ−sinθ)

=0.

hope it helps you .