Question

The value of (sin 40° - cos 50°) is
A] sin 10
B] - sin 10
C] 0
D] cos 10​

Answer 1

Answer:

C] 0

Step-by-step explanation:

Firstly looking at the expression

sin 40 - cos 50

Simplifying it

sin 40 - sin(90-50) [cos x = sin(90-x) , complementary angles]

sin 40 - sin 40

0

Answer 2

Answer:

C) 0 is the ANSWER

Step-by-step explanation:

sin 40°- cos 50°

=sin 40° - cos (90°- 40°)

=sin 40° - sin 40°

=0

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