Question

7. if theta is an acute angle of a right triangle then the value of
sin theta cos(90- theta) + cos theta sin(90-theta)
​

Answer 1

Step-by-step explanation:

sin theta (sin theta) + cos theta ( cos theta)

$sin {}^{2} theta + cos {}^{2} theta$

= 1

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Answer 2

Answer:

2 Sin theta Cos teta

Step-by-step explanation:

because,

90⁰- theta will get cancle from both the side.

then what is remaining,

sin thera Cos + cos theta sin.

= cos + cos theta

= 2 cos thera

similarly,

Sin theta + sin

2sin theta

2sin theta + 2 cos theta

taking 2 common.

therefore,

2 Sin theta Cos teta.