Question

Evaluate
a) sin 45° sin 30°
b) sin 60° cos 30°
c) cos 60°.cos 45º - sin 60°. sin 45°
Ans:​

Answer 1

Answer:

y sin 60° cos 30° + sin 30° cos 60°

(ii) 2 tan’ 45° + cos2 30° - sin60°

cos 45º

sec 30° + cosec 30°

(IV)

sin 30° + tan 45º - cosec 60°

sec 30° + cos 60° + cot 45°

oleh

cos 60° + 4 sec? 30° - tan? 45°

sin 30° + cos2 30°

Step-by-step explanation:

pls follow me

Answer 2

Step-by-step explanation:

a.

$a. \: \: \: \: \frac{1}{ \sqrt{2} }. \frac{1}{2} = \frac{1}{2 \sqrt{2} } \\ b. \: \: \: \: \: \frac{ \sqrt{3} }{2} . \frac{ \sqrt{3} }{2} = \frac{3}{4} \\ c \: \: . \cos(60 + 45) = - \sin( 15) = - \frac{ \sqrt{3 } - 1}{2 \sqrt{2} }$

I hope it will help you to understand the solution ☺️

please mark it as the brainliest answer ☃️❄️