[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [Mat3](./rc-js-util.mat3.md) > [setRotationMatrix](./rc-js-util.mat3.setrotationmatrix.md) ## Mat3.setRotationMatrix() method counter clockwise, in radians **Signature:** ```typescript setRotationMatrix(_angle: number): Mat3; ``` ## Parameters

Parameter	Type	Description
\_angle	number

**Returns:** [Mat3](./rc-js-util.mat3.md)<TArray>